Marc Yor

The barnes G function and its relations with sums and products of generalized Gamma convolution variables (2009)

Nikeghbali, Ashkan; University Of Zurich; Ashkan.nikeghbali@math.uzh.ch, Yor, Marc; Universite Paris 6; Dea@proba.jussieu.fr

We give a probabilistic interpretation for the Barnes G-function which appears in random matrix theory and in analytic number theory in the important moments conjecture due to Keating-Snaith for the...

A Brownian sheet martingale with the same marginals as the arithmetic average of geometric Brownian motion (2009)

Baker, David; Université Pierre Et Marie Curie; David.baker@etu.upmc.fr, Yor, Marc; Université Pierre Et Marie Curie; Deaproba@proba.jussieu.fr

We construct a martingale which has the same marginals as the arithmetic average of geometric Brownian motion.This provides a short proof of the recent result due to P. Carr et al that the arithmetic...

Around Tsirelson's equation, or: The evolution process may not explain everything (2009)

Yano, Kouji, Yor, Marc

We present a synthesis of a number of developments which have been made around the celebrated Tsirelson's equation (1975), conveniently modified in the framework of a Markov chain taking values in a...

A global view of Brownian penalisations (2009)

Najnudel, Joseph, Roynette, Bernard, Yor, Marc

In this monograph, we construct and study a sigma-finite measure on continuous functions from R_+ to R, strongly related to many probability measures obtained by penalisation of Brownian motion, i.e....

Renewal series and square-root boundaries for Bessel processes (2008)

Enriquez, Nathanael; Universite Paris 10; Nenriquez@u-paris10.fr, Sabot, Christophe; Université De Lyon 1; Sabot@math.univ-lyon1.fr, Yor, Marc; Universite Paris 6; Deaproba@proba.jussieu.fr

We show how a description of Brownian exponential functionals as a renewal series gives access to the law of the hitting time of a square-root boundary by a Bessel process. This extends classical...

On the laws of first hitting times of points for one-dimensional symmetric stable L\'evy processes (2008)

Yano, Kouji, Yano, Yuko, Yor, Marc

Several aspects of the laws of first hitting times of points are investigated for one-dimensional symmetric stable L\'evy processes. It\^o's excursion theory plays a key role in this study.

Measuring the "non-stopping timeness" of ends of previsible sets (2008)

Yen, Ju-Yi, Yor, Marc

In this paper, we propose several "measurements" of the "non-stopping timeness" of ends g of previsible sets, such that g avoids stopping times, in an ambiant filtration. We then study several...

Call option prices based on Bessel processes (2008)

Yen, Ju-Yi, Yor, Marc

As a complement to some recent work by Pal and Protter, "Strict local martingales, bubbles, and no early exercise", we show that the call option prices associated with the Bessel strict local...

Penalising symmetric stable L\'evy paths (2008)

Yano, Kouji, Yano, Yuko, Yor, Marc

Limit theorems for the normalized laws with respect to two kinds of weight functionals are studied for any symmetric stable L\'evy process of index $ 1 < \alpha \le 2 $. The first kind is a function...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part B : The finite time horizon (2008)

Bentata, Amel, Yor, Marc

These notes are the second half of the contents of the course given by the second author at the Bachelier Seminar (8-15-22 February 2008) at IHP. They also correspond to topics studied by the first...

Renewal series and square-root boundaries for Bessel processes (2008)

Enriquez, Nathanael, Sabot, Christophe, Yor, Marc

We show how a description of Brownian exponential functionals as a renewal series gives access to the law of the hitting time of a square-root boundary by a Bessel process. This extends classical...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part A : The infinite time horizon (2008)

Bentata, Amel, Yor, Marc

These notes are the first half of the contents of the course given by the second author at the Bachelier Seminar (February 8-15-22 2008) at IHP. They also correspond to topics studied by the first...

On the time to reach maximum for a variety of constrained Brownian motions (2008)

Majumdar, Satya. N., Randon-Furling, Julien, Kearney, Michael J., Yor, Marc

We derive P(M,t_m), the joint probability density of the maximum M and the time t_m at which this maximum is achieved for a class of constrained Brownian motions. In particular, we provide explicit...

IMS Lecture Notes Monograph (2008)

Jim Pitman, Marc Yor

Some properties of the arc-sine law related to its invariance under a family of rational maps ∗

THE TWO-PARAMETER POISSON–DIRICHLET DISTRIBUTION DERIVED FROM (2008)

A Stable Subordinator, Jim Pitman, Marc Yor

The two-parameter Poisson–Dirichlet distribution, denoted PD�α � θ�, is a probability distribution on the set of decreasing positive sequences with sum 1. The usual Poisson–Dirichlet...

On the time to reach maximum for a variety of constrained Brownian motions (2008)

Majumdar, Satya. N., Randon-Furling, Julien, Kearney, Michael J., Yor, Marc

We derive P(M,t_m), the joint probability density of the maximum M and the time t_m at which this maximum is achieved for a class of constrained Brownian motions. In particular, we provide explicit...

On the time to reach maximum for a variety of constrained Brownian motions (2008)

Majumdar, Satya. N., Randon-Furling, Julien, Kearney, Michael J., Yor, Marc

We derive P(M,t_m), the joint probability density of the maximum M and the time t_m at which this maximum is achieved for a class of constrained Brownian motions. In particular, we provide explicit...

An alternative expression for the Black-Scholes formula in terms of Brownian first and last passage times (2008)

Madan, D., Roynette, Bernard, Yor, Marc

The celebrated Black-Scholes formula which gives the price of a European option, may be expressed as the cumulative function of a last passage time of Brownian motion. A related result involving...

An alternative expression for the Black-Scholes formula in terms of Brownian first and last passage times (2008)

Madan, D., Roynette, Bernard, Yor, Marc

The celebrated Black-Scholes formula which gives the price of a European option, may be expressed as the cumulative function of a last passage time of Brownian motion. A related result involving...

Local limit theorems for Brownian additive functionals and penalisation of Brownian paths, IX (2008)

Roynette, Bernard, Yor, Marc

We obtain a local limit theorem for the laws of a class of Brownian additive functionals and we apply this result to a penalisation problem. We study precisely the case of the additive functional :...

Local limit theorems for Brownian additive functionals and penalisation of Brownian paths, IX (2008)

Roynette, Bernard, Yor, Marc

We obtain a local limit theorem for the laws of a class of Brownian additive functionals and we apply this result to a penalisation problem. We study precisely the case of the additive functional :...

From Black-Scholes formula, to local times and last passage times for certain submartingales (2008)

Madan, D., Roynette, Bernard, Yor, Marc

Motivated by an expression of the standard Black-Scholes formula as (a multiple of) the cumulative function of a certain distribution on $\/Bbb R_+$, we discuss a general extension of this identity...

From Black-Scholes formula, to local times and last passage times for certain submartingales (2008)

Madan, D., Roynette, Bernard, Yor, Marc

Motivated by an expression of the standard Black-Scholes formula as (a multiple of) the cumulative function of a certain distribution on $\/Bbb R_+$, we discuss a general extension of this identity...

Ten penalisation results of Brownian motion involving its one-sided supremum until first and last passage times, VIII (2008)

Roynette, Bernard, Yor, Marc

We penalise Brownian motion by a function of its one-sided supremum considered up to the last zero before $t$, resp. first zero after $t$, of that Brownian motion. This study presents some analogy...

Penalisation of Brownian motion with its maximum and minimum processes as weak forms of Skorokhod embedding, X (2008)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We develop a Brownian penalisation procedure related to weight processes $(F_t$) of the type : $F_t := f(I_t, S_t) where $f$ is a bounded function with compact support and $S_t (resp. I_t)$ is the...

Ten penalisation results of Brownian motion involving its one-sided supremum until first and last passage times, VIII (2008)

Roynette, Bernard, Yor, Marc

We penalise Brownian motion by a function of its one-sided supremum considered up to the last zero before $t$, resp. first zero after $t$, of that Brownian motion. This study presents some analogy...

Penalisation of Brownian motion with its maximum and minimum processes as weak forms of Skorokhod embedding, X (2008)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We develop a Brownian penalisation procedure related to weight processes $(F_t$) of the type : $F_t := f(I_t, S_t) where $f$ is a bounded function with compact support and $S_t (resp. I_t)$ is the...

Unifying Black-Scholes type formulae which involve Brownian last passage times up to a finite horizon (2008)

Madan, D., Roynette, Bernard, Yor, Marc

The authors recently discovered some interesting relations between the Black-Scholes formula and last passage times of the Brownian exponential martingales, which invites one to seek analogous...

Unifying Black-Scholes type formulae which involve Brownian last passage times up to a finite horizon (2008)

Madan, D., Roynette, Bernard, Yor, Marc

The authors recently discovered some interesting relations between the Black-Scholes formula and last passage times of the Brownian exponential martingales, which invites one to seek analogous...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part A : The infinite time horizon (2008)

Bentata, Amel, Yor, Marc

These notes are the first half of the contents of the course given by the second author at the Bachelier Seminar (February 8-15-22 2008) at IHP. They also correspond to topics studied by the first...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part A : The infinite time horizon (2008)

Bentata, Amel, Yor, Marc

These notes are the first half of the contents of the course given by the second author at the Bachelier Seminar (February 8-15-22 2008) at IHP. They also correspond to topics studied by the first...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part B : The finite time horizon (2008)

Bentata, Amel, Yor, Marc

These notes are the second half of the contents of the course given by the second author at the Bachelier Seminar (8-15-22 February 2008) at IHP. They also correspond to topics studied by the first...

A family of generalized gamma convoluted variables (2008)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

This paper consists of three parts: in the first part, we describe a family of generalized gamma convoluted (abbreviated as GGC) variables. In the second part, we use this description toprove that...

Renewal series and square-root boundaries for Bessel processes (2008)

Enriquez, Nathanael, Sabot, Christophe, Yor, Marc

We show how a description of Brownian exponential functionals as a renewal series gives access to the law of the hitting time of a square-root boundary by a Bessel process. This extends classical...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part B : The finite time horizon (2008)

Bentata, Amel, Yor, Marc

These notes are the second half of the contents of the course given by the second author at the Bachelier Seminar (8-15-22 February 2008) at IHP. They also correspond to topics studied by the first...

A family of generalized gamma convoluted variables (2008)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

This paper consists of three parts: in the first part, we describe a family of generalized gamma convoluted (abbreviated as GGC) variables. In the second part, we use this description toprove that...

Renewal series and square-root boundaries for Bessel processes (2008)

Enriquez, Nathanael, Sabot, Christophe, Yor, Marc

We show how a description of Brownian exponential functionals as a renewal series gives access to the law of the hitting time of a square-root boundary by a Bessel process. This extends classical...

Put option prices as joint distribution functions in strike and maturity : the Black-Scholes case (2008)

Madan, D., Roynette, Bernard, Yor, Marc

For a large class of $\mathbb{R}_{+}$ valued, continuous local martingales $(M_{t}\; t \ge 0)$, with $M_{0} =1$ and $M_{\infty} = 0$, the put quantity : $\Pi_{M} (K,t) = E \big((K-M_{t})^{+} \big)$...

Put option prices as joint distribution functions in strike and maturity : the Black-Scholes case (2008)

Madan, D., Roynette, Bernard, Yor, Marc

For a large class of $\mathbb{R}_{+}$ valued, continuous local martingales $(M_{t}\; t \ge 0)$, with $M_{0} =1$ and $M_{\infty} = 0$, the put quantity : $\Pi_{M} (K,t) = E \big((K-M_{t})^{+} \big)$...

Existence and properties of pseudo-inverses for Bessel and related processes (2008)

Roynette, Bernard, Yor, Marc

It is shown that the tail probability of a Bessel process is the distributio function of a random time which is related to first and last passage times of Bessel processes

An interesting family of Black-Scholes perpetuities (2008)

Roynette, Bernard, Yor, Marc

We obtain the Laplace transform and integrability properties of the integral over $\Bbb R_+$ of the call quantity associated with geometric Brownian motion with negative drift, thus adding a new...

Existence and properties of pseudo-inverses for Bessel and related processes (2008)

Roynette, Bernard, Yor, Marc

It is shown that the tail probability of a Bessel process is the distributio function of a random time which is related to first and last passage times of Bessel processes

An interesting family of Black-Scholes perpetuities (2008)

Roynette, Bernard, Yor, Marc

We obtain the Laplace transform and integrability properties of the integral over $\Bbb R_+$ of the call quantity associated with geometric Brownian motion with negative drift, thus adding a new...

A Brownian sheet martingale with the same marginals as the arithmetic average of geometric Brownian motion. (2008)

Baker, David, Yor, Marc

We construct a martingale which has the same marginals as the arithmetic average of geometric Brownian motion. This provides a short proof of the recent result due to P. Carr et al [5] that the...

A Brownian sheet martingale with the same marginals as the arithmetic average of geometric Brownian motion. (2008)

Baker, David, Yor, Marc

We construct a martingale which has the same marginals as the arithmetic average of geometric Brownian motion. This provides a short proof of the recent result due to P. Carr et al [5] that the...

Path decompositions of a Brownian bridge related to the ratio of its maximum and amplitude (2007)

Jim Pitman, Marc Yor

We give two new proofs of Cs'aki's formula for the law of the ratio 1 \Gamma Q of the maximum relative to the amplitude (i.e. the maximum minus minimum) for a standard Brownian bridge. The...

3 (2007)

Hans Follmer, Ching-tang Wu, Marc Yor

We show the existence, for any k 2 N, of processes which have the same k-marginals as Brownian motion, although they are not Brownian motions. For k = 4, this proves a conjecture of Stoyanov. The law...

y (2007)

Jim Pitman, Marc Yor, Marie Curie

divisible laws associated with hyperbolic functions

The joint law of the last zeros of Brownian motion and of its Lévy transform (2007)

Catherine Donati-Martin, Zhan Shi, Marc Yor

for a number of recent studies. As is well-known, in the particular case ¯ = 1, (B (1) t ; t 0), the L'evy transform of B, is a Brownian motion, and some interest in the pair (B; B (1) ) stems...

Asset Prices are Brownian motion: Business Time.* (2007)

Only In, Helyette Geman, Dilip B. Madan, Marc Yor

This paper argues that asset price processes arising from market clearing conditions should be modeled as pure jump processes, with no continuous martingale component. However, we show that...

Probability laws related to the Jacobi theta and Riemann zeta functions, and Brownian excursions (2007)

Jim Pitman, Marc Yor

This paper reviews known results which connect Riemann's integral representations of his zeta function, involving Jacobi's theta function and its derivatives, to some particular probability...

and the times spent by X above and below level y up to time (2007)

Jim Pitman, Marc Yor

Hitting, occupation, and inverse local times of one-dimensional diffusions: martingale and

3 (2007)

Hans Follmer, Ching-tang Wu, Marc Yor

We show the existence, for any k 2 N, of processes which have the same k-marginals as Brownian motion, although they are not Brownian motions. For k = 4, this proves a conjecture of Stoyanov. The law...

Where Did The Brownian Particle Go? (2007)

Robin Pemantle, Yuval Peres, Jim Pitman, Marc Yor

Consider the radial projection onto the unit sphere of the path a d-dimensional Brownian motion W, started at the center of the sphere and run for unit time. Given the occupation measure of this...

by (2007)

Jim Pitman, Marc Yor

the relative lengths of excursions derived from a stable subordinator

invariance under a family (2007)

Jim Pitman, Marc Yor

properties of the arc sine law related to its

Probability laws related to the Jacobi theta and Riemann zeta functions, and Brownian excursions (2007)

Jim Pitman, Marc Yor

This paper reviews known results which connect Riemann's integral representations of his zeta function, involving Jacobi's theta function and its derivatives, to some particular probability...

Where Did The Brownian Particle Go? (2007)

Robin Pemantle Yuval, Yuval Peres, Jim Pitman, Marc Yor

Consider the radial projection onto the unit sphere of the path a d-dimensional Brownian motion W , started at the center of the sphere and run for unit time.

SOME MARTINGALES ASSOCIATED TO REFLECTED LÉVY PROCESSES (2007)

Paris Cnrs (umr, Laurent Nguyen-ngoc, Marc Yor

Some martingales associated to reflected Lévy processes L. NGUYEN-NGOC & M. YOR NOVEMBRE 2003

Generalized Gamma Convolutions, Dirichlet means, Thorin measures, with explicit examples (2007)

James, Lancelot F., Roynette, Bernard, Yor, Marc

In Section 1, we present a number of classical results concerning the Generalized Gamma Convolution (:GGC) variables, their Wiener-Gamma representations, and relation with the Dirichlet processes.To...

The barnes G function and its relations with sums and products of generalized Gamma convolution variables (2007)

Nikeghbali, Ashkan, Yor, Marc

We give a probabilistic interpretation for the Barnes G-function which appears in random matrix theory and in analytic number theory in the important moments conjecture due to Keating-Snaith for the...

Quasi-invariance properties of a class of subordinators (2007)

Von Renesse, Max-K., Yor, Marc, Zambotti, Lorenzo

We study absolute-continuity properties of a class of stochastic processes, including the gamma and the Dirichlet processes. We prove that the laws of a general class of non-linear transformations of...

The characteristic polynomial of a random unitary matrix: a probabilistic approach (2007)

Bourgade, Paul, Hughes, Chris, Nikeghbali, Ashkan, Yor, Marc

In this paper, we propose a probabilistic approach to the study of the characteristic polynomial of a random unitary matrix. We recover the Mellin Fourier transform of such a random polynomial, first...

Burkholder's submartingales from a stochastic calculus perspective (2007)

Peccati, Giovanni, Yor, Marc

We provide a simple proof, as well as several generalizations, of a recent result by Davis and Suh, characterizing a class of continuous submartingales and supermartingales that can be expressed in...

Tilted stable subordinators, Gamma time changes and Occupation Time of rays by Bessel Spiders (2007)

James, Lancelot F., Yor, Marc

We exhibit, in the form of some identities in law, some connections between tilted stable subordinators, time-changed by independent Gamma processes and the occupation times of Bessel spiders, or...

Euler's formula for zeta(2n) and Cauchy variables (2007)

Bourgade, Paul, Fujita, Takahiko, Yor, Marc

Euler's formulae for zeta(2n) are recovered from the computation in two dierent manners of the even moments of log(|C1C2|), for C1 and C2 two independent standard Cauchy variables. The method...

Two examples of functional penalisations of Brownian motion, VIII (2007)

Roynette, Bernard, Yor, Marc

On one hand, we penalise Brownian paths by a function of one-sided supremum of Brownian motion, considered up to the last, resp. the first, zero, before $t$, resp. after $t$. This study provides some...

Some extensions of Pitman's and Ray-Knight's theorems for penalized Brownian motions and their local times, IV (2007)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We give some extensions of Pitman's and Ray-Knight's theorems via a penalization procedure involving Brownian motion and its local time at 0

Burkholder's submartingales from a stochastic calculus perspective (2007)

Peccati, Giovanni, Yor, Marc

We provide a simple proof, as well as several generalizations, of a recent result by Davis and Suh, characterizing a class of continuous submartingales and supermartingales that can be expressed in...

Quasi-invariance properties of a class of subordinators (2007)

Von Renesse, Max-K., Yor, Marc, Zambotti, Lorenzo

We study absolute-continuity properties of a class of stochastic processes, including the gamma and the Dirichlet processes. We prove that the laws of a general class of non-linear transformations of...

Generalized Gamma convolutions, Dirichlet means, Thorin measures with explicit examples (2007)

James, L.F., Roynette, Bernard, Yor, Marc

In section 1, we present a number of classical results concerning the generalized Gamma convolution ( : GGC) variables, their Wiener-Gamma representations, and relation with Dirichlet processes. To a...

Generalized Gamma convolutions, Dirichlet means, Thorin measures with explicit examples (2007)

James, L.F., Roynette, Bernard, Yor, Marc

In section 1, we present a number of classical results concerning the generalized Gamma convolution ( : GGC) variables, their Wiener-Gamma representations, and relation with Dirichlet processes. To a...

Quasi-invariance properties of a class of subordinators (2007)

Von Renesse, Max-K., Yor, Marc, Zambotti, Lorenzo

We study absolute-continuity properties of a class of stochastic processes, including the gamma and the Dirichlet processes. We prove that the laws of a general class of non-linear transformations of...

Burkholder's submartingales from a stochastic calculus perspective (2007)

Peccati, Giovanni, Yor, Marc

We provide a simple proof, as well as several generalizations, of a recent result by Davis and Suh, characterizing a class of continuous submartingales and supermartingales that can be expressed in...

Some extensions of Pitman's and Ray-Knight's theorems for penalized Brownian motions and their local times, IV (2007)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We give some extensions of Pitman's and Ray-Knight's theorems via a penalization procedure involving Brownian motion and its local time at 0

Two examples of functional penalisations of Brownian motion, VIII (2007)

Roynette, Bernard, Yor, Marc

On one hand, we penalise Brownian paths by a function of one-sided supremum of Brownian motion, considered up to the last, resp. the first, zero, before $t$, resp. after $t$. This study provides some...

Euler's formula for zeta(2n) and Cauchy variables (2007)

Bourgade, Paul, Fujita, Takahiko, Yor, Marc

Euler's formulae for zeta(2n) are recovered from the computation in two dierent manners of the even moments of log(|C1C2|), for C1 and C2 two independent standard Cauchy variables. The method...

On the excursion theory for linear diffusions (2006)

Salminen, Paavo, Vallois, Pierre, Yor, Marc

We present a number of important identities related to the excursion theory of linear diffusions. In particular, excursions straddling an independent exponential time are studied in detail. Letting...

Arcsine Laws and Interval Partitions Derived from a Stable Subordinator (2006)

Pitman, Jim, Yor, Marc

Lévy discovered that the fraction of time a standard one-dimensional Brownian motion B spends positive before time t has arcsine distribution, both for t a fixed time when Bt ≠ 0 almost surely,...

On a particular class of self-decomposable random variables : the durations of Bessel excursions straddling independent exponential times. (2006)

Bertoin, J., Fujita, T., Roynette, Bernard, Yor, Marc

The distributional properties of the duration of a recurrent Bessel process straddling an independent exponential time are studied in detail. Althrough our study may be considered as a particular...

On a particular class of self-decomposable random variables : the durations of Bessel excursions straddling independent exponential times. (2006)

Bertoin, J., Fujita, T., Roynette, Bernard, Yor, Marc

The distributional properties of the duration of a recurrent Bessel process straddling an independent exponential time are studied in detail. Althrough our study may be considered as a particular...

A chaotic representation property of the multidimensional Dunkl processes (2006)

Gallardo, Léonard, Yor, Marc

Dunkl processes are martingales as well as c\`{a}dl\`{a}g homogeneous Markov processes taking values in $\mathbb{R}^d$ and they are naturally associated with a root system. In this paper we study the...

A chaotic representation property of the multidimensional Dunkl processes (2006)

Gallardo, Léonard, Yor, Marc

Dunkl processes are martingales as well as càdlàg homogeneous Markov processes taking values in ℝd and they are naturally associated with a root system. In this paper we study the jumps of these...

Linear transformations of two independent Brownian motions and orthogonal decompositions of Brownian filtrations (2006)

Wu, Ching-Tang, Yor, Marc

Brownian motions defined as linear transformations of two independent Brownian motions are studied, together with certain orthogonal decompositions of Brownian filtrations.

Asymptotic laws for compositions derived from transformed subordinators (2006)

Gnedin, Alexander, Pitman, Jim, Yor, Marc

A random composition of n appears when the points of a random closed set ℛ̃⊂[0,1] are used to separate into blocks n points sampled from the uniform distribution. We study the number of parts Kn...

CGMY and Meixner Subordinators are Absolutely Continuous with respect to One Sided Stable Subordinators. (2006)

Madan, Dilip, Yor, Marc

We describe the CGMY and Meixner processes as time changed Brownian motions. The CGMY uses a time change absolutely continuous with respect to the one-sided stable $(Y/2)$ subordinator while the...

CGMY and Meixner Subordinators are Absolutely Continuous with respect to One Sided Stable Subordinators. (2006)

Madan, Dilip, Yor, Marc

We describe the CGMY and Meixner processes as time changed Brownian motions. The CGMY uses a time change absolutely continuous with respect to the one-sided stable $(Y/2)$ subordinator while the...

CGMY and Meixner Subordinators are Absolutely Continuous with respect to One Sided Stable Subordinators (2006)

Madan, Dilip, Yor, Marc

We describe the CGMY and Meixner processes as time changed Brownian motions. The CGMY uses a time change absolutely continuous with respect to the one-sided stable $(Y/2)$ subordinator while the...

On a particular class of self-decomposable random variables : the durations of Bessel excursions straddling independent exponential times. (2006)

Bertoin, J., Fujita, T., Roynette, Bernard, Yor, Marc

The distributional properties of the duration of a recurrent Bessel process straddling an independent exponential time are studied in detail. Althrough our study may be considered as a particular...

CGMY and Meixner Subordinators are Absolutely Continuous with respect to One Sided Stable Subordinators. (2006)

Madan, Dilip, Yor, Marc

We describe the CGMY and Meixner processes as time changed Brownian motions. The CGMY uses a time change absolutely continuous with respect to the one-sided stable $(Y/2)$ subordinator while the...

Limiting laws associated with Brownian motion perturbed by its maximum, minimum and local time II (2006)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain probability measures on the canonical space penalizing the Wiener measure by a function of its maximum (resp. minimum, local time). We study the law of the canonical process under these new...

Limiting laws associated with Brownian motion perturbated by normalized exponential weights I. (2006)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We determine the rate of decay of the expectation Z(t) of some multiplicative functional related to Brownian motion up to time t. This permits to prove that the Wiener measure, penalized by this...

Random Matrices and the Riemann zeta function (2006)

Bourgade, Paul, Yor, Marc

These notes are based on a talk given at the Institut de Mathématiques Elie Cartan de Nancy in June 2006. Their purpose is to introduce the reader to some links between two fields of mathematics :...

Some Explicit Krein Representations of Certain Subordinators, Including the Gamma Process (2006)

Donati-Martin, Catherine, Yor, Marc

We give a representation of the Gamma subordinator as a Krein functional of Brownian motion, using the known representations for stable subordinators and Esscher transforms. In particular, we have...

On the excursion theory for linear diffusions (2006)

Salminen, Paavo, Vallois, Pierre, Yor, Marc

We present a number of important identities related to the excursion theory of linear diffusions. In particular, excursions straddling an independent exponential time are studied in detail. Letting...

Limiting laws associated with Brownian motion perturbed by its maximum, minimum and local time II (2006)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain probability measures on the canonical space penalizing the Wiener measure by a function of its maximum (resp. minimum, local time). We study the law of the canonical process under these new...

Limiting laws associated with Brownian motion perturbated by normalized exponential weights I. (2006)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We determine the rate of decay of the expectation Z(t) of some multiplicative functional related to Brownian motion up to time t. This permits to prove that the Wiener measure, penalized by this...

On the excursion theory for linear diffusions (2006)

Salminen, Paavo, Vallois, Pierre, Yor, Marc

We present a number of important identities related to the excursion theory of linear diffusions. In particular, excursions straddling an independent exponential time are studied in detail. Letting...

Random Matrices and the Riemann zeta function (2006)

Bourgade, Paul, Yor, Marc

These notes are based on a talk given at the Institut de Mathématiques Elie Cartan de Nancy in June 2006. Their purpose is to introduce the reader to some links between two fields of mathematics :...

On a particular class of self-decomposable random variables : the durations of Bessel excursions straddling independent exponential times. (2006)

Bertoin, J., Fujita, T., Roynette, Bernard, Yor, Marc

The distributional properties of the duration of a recurrent Bessel process straddling an independent exponential time are studied in detail. Althrough our study may be considered as a particular...

CGMY and Meixner Subordinators are Absolutely Continuous with respect to One Sided Stable Subordinators. (2006)

Madan, Dilip, Yor, Marc

We describe the CGMY and Meixner processes as time changed Brownian motions. The CGMY uses a time change absolutely continuous with respect to the one-sided stable $(Y/2)$ subordinator while the...

Exponential functionals of Brownian motion, I: Probability laws at fixed time (2005)

Matsumoto, Hiroyuki, Yor, Marc

This paper is the first part of our survey on various results about the distribution of exponential type Brownian functionals defined as an integral over time of geometric Brownian motion. Several...

Exponential functionals of Brownian motion, II: Some related diffusion processes (2005)

Matsumoto, Hiroyuki, Yor, Marc

This is the second part of our survey on exponential functionals of Brownian motion. We focus on the applications of the results about the distributions of the exponential functionals, which have...

A note on a.s. finiteness of perpetual integral functionals of diffusions (2005)

Salminen, Paavo, Yor, Marc

In this note, with the help of the boundary classification of diffusions, we derive a criterion of the convergence of perpetual integral functionals of transient real-valued diffusions. In the...

A note on a.s. finiteness of perpetual integral functionals of diffusions (2005)

Salminen, Paavo, Yor, Marc

In this note, with the help of the boundary classification of diffusions, we derive a criterion of the convergence of perpetual integral functionals of transient real-valued diffusions. In the...

A note on a.s. finiteness of perpetual integral functionals of diffusions (2005)

Salminen, Paavo, Yor, Marc

In this note, with the help of the boundary classification of diffusions, we derive a criterion of the convergence of perpetual integral functionals of transient real-valued diffusions. In the...

Exponential functionals of Levy processes (2005)

Bertoin, Jean, Yor, Marc

This text surveys properties and applications of the exponential functional $\int_0^t\exp(-\xi_s)ds$ of real-valued L\'evy processes $\xi=(\xi_t,t\geq0)$.

Limiting laws for long Brownian Bridges perturbed by their one-sided maximum, III (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

Results of penalization of a one-dimensional Brownian motion $(X_t) $, by its one-sided maximum $\dis (S_t=\sup_{0 \leq u \leq t}X_u)$, which were recently obtained by the authors are improved with...

Limiting laws associated with Brownian motion perturbed by its maximum, minmum and local time II (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain probability measures on the canonical space penalizing the Wiener measure by a function of its maximum (resp. minimum, local time). We study the law of the canonical process under these new...

Limiting laws associated with Brownian motion perturbed by its maximum, minmum and local time II (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain probability measures on the canonical space penalizing the Wiener measure by a function of its maximum (resp. minimum, local time). We study the law of the canonical process under these new...

Limiting laws associated with Brownian motion perturbated by normalized exponential weights I (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We determine the rate of decay of the expectation Z(t) of some multiplicative functional related to Brownian motion up to time t. This permits to prove that the Wiener measure, penalized by this...

Limiting laws associated with Brownian motion perturbed by its maximum, minmum and local time II (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain probability measures on the canonical space penalizing the Wiener measure by a function of its maximum (resp. minimum, local time). We study the law of the canonical process under these new...

Limiting laws associated with Brownian motion perturbated by normalized exponential weights I. (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We determine the rate of decay of the expectation Z(t) of some multiplicative functional related to Brownian motion up to time t. This permits to prove that the Wiener measure, penalized by this...

Limiting laws associated with Brownian motion perturbated by normalized exponential weights I. (2005)

Roynette, Bernard, Vallois, Pierre, Yor, Marc

We determine the rate of decay of the expectation Z(t) of some multiplicative functional related to Brownian motion up to time t. This permits to prove that the Wiener measure, penalized by this...

Options on Hedge Funds under the High Water Mark Rule (2005)

Atlan, Marc, Geman, Hélyette, Yor, Marc

The rapidly growing hedge fund industry has provided individual and institutional investors with new investment vehicles and styles of management. It has also brought forward a new form of...

Options on Hedge Funds under the High Water Mark Rule (2005)

Atlan, Marc, Geman, Hélyette, Yor, Marc

The rapidly growing hedge fund industry has provided individual and institutional investors with new investment vehicles and styles of management. It has also brought forward a new form of...

Options on Hedge Funds under the High Water Mark Rule (2005)

Atlan, Marc, Geman, Hélyette, Yor, Marc

The rapidly growing hedge fund industry has provided individual and institutional investors with new investment vehicles and styles of management. It has also brought forward a new form of...

Further examples of explicit Krein representations of certain subordinators (2005)

Donati-Martin, Catherine, Yor, Marc

In a previous paper , we have shown that the gamma subordinators may be represented as inverse local times of certain diffusions. In the present paper, we give such representations for other...

Further examples of explicit Krein representations of certain subordinators (2005)

Donati-Martin, Catherine, Yor, Marc

In a previous paper , we have shown that the gamma subordinators may be represented as inverse local times of certain diffusions. In the present paper, we give such representations for other...

Further examples of explicit Krein representations of certain subordinators (2005)

Donati-Martin, Catherine, Yor, Marc

In a previous paper, we have shown that the gamma subordinators may be represented as inverse local times of certain diffusions. In the present paper, we give such representations for other...

A definition and some characteristic properties of pseudo-stopping times (2005)

Nikeghbali, Ashkan, Yor, Marc

Recently, Williams [Bull. London Math. Soc. 34 (2002) 610–612] gave an explicit example of a random time ρ associated with Brownian motion such that ρ is not a stopping time but...

Equivalent and absolutely continuous measure changes for jump-diffusion processes (2005)

Cheridito, Patrick, Filipovic, Damir, Yor, Marc

We provide explicit sufficient conditions for absolute continuity and equivalence between the distributions of two jump-diffusion processes that can explode and be killed by a potential.

Equivalent and absolutely continuous measure changes for jump-diffusion processes (2005)

Cheridito, Patrick, Filipović, Damir, Yor, Marc

We provide explicit sufficient conditions for absolute continuity and equivalence between the distributions of two jump-diffusion processes that can explode and be killed by a potential.

Perpetual Integral Functionals as Hitting and Occupation Times (2005)

Salminen, Paavo; Abo Akademi, Finland; Phsalmin@abo.fi, Yor, Marc; Université Pierre Et Marie Curie; Pitman@stat.berkeley.edu

Abstract. Let $X$ be a linear diffusion and $f$ a non-negative, Borel measurable function. We are interested in finding conditions on $X$ and $f$ which imply that the perpetual integral functional $$...

Wiener integrals for centered powers of Bessel processes, I (2005)

Funaki, Tadahisa, Hariya, Yuu, Yor, Marc, 舟木, 直久, 針谷, 祐, ヨー, マーク

Kyushu University 21st Century COE Program Development of Dynamic Mathematics with High Functionality

Some explicit Krein representations of certain subordinators, including the Gamma process (2005)

Donati-Martin, Catherine, Yor, Marc

We give a representation of the Gamma subordinator as a Krein functional of Brownian motion, using the known representations for stable subordinators and Esscher transforms. In particular, we have...

Some explicit Krein representations of certain subordinators, including the Gamma process (2005)

Donati-Martin, Catherine, Yor, Marc

We give a representation of the Gamma subordinator as a Krein functional of Brownian motion, using the known representations for stable subordinators and Esscher transforms. In particular, we have...

Some explicit Krein representations of certain subordinators, including the Gamma process (2005)

Donati-Martin, Catherine, Yor, Marc

We give a representation of the Gamma subordinator as a Krein functional of Brownian motion, using the known representations for stable subordinators and Esscher transforms. In particular, we have...

"Identities in law between quadratic functionals of bivariate Gaussian processes, through Fubini theorems and symmetric projections" (2005)

Peccati, Giovanni, Yor, Marc

We present three new identities in law for quadratic functionals of conditioned bivariate Gaussian processes. In particular, our results provide a two-parameter generalization of a celebrated...

"Identities in law between quadratic functionals of bivariate Gaussian processes, through Fubini theorems and symmetric projections" (2005)

Peccati, Giovanni, Yor, Marc

We present three new identities in law for quadratic functionals of conditioned bivariate Gaussian processes. In particular, our results provide a two-parameter generalization of a celebrated...

Identities in law between quadratic functionals of bivariate Gaussian processes, through Fubini theorems and symmetric projections (2005)

Peccati, Giovanni, Yor, Marc

We present three new identities in law for quadratic functionals of conditioned bivariate Gaussian processes. In particular, our results provide a two-parameter generalization of a celebrated...

Exponential functionals of Brownian motion and disordered systems (2005)

Comtet, Alain, Monthus, Cecile, Yor, Marc

The paper deals with exponential functionals of the linear Brownian motion which arise in different contexts such as continuous time finance models and one-dimensional disordered models. We study...

Tanaka formula for symmetric Lévy processes (2005)

Salminen, Paavo, Yor, Marc

Starting from the potential theoretic definition of the local times of a Markov process - when these exist - we obtain a Tanaka formula for the local times of symmetric Lévy processes. The most...

Tanaka formula for symmetric Lévy processes (2005)

Salminen, Paavo, Yor, Marc

Starting from the potential theoretic definition of the local times of a Markov process - when these exist - we obtain a Tanaka formula for the local times of symmetric Lévy processes. The most...

Tanaka formula for symmetric L\'{e}vy processes (2005)

Salminen, Paavo, Yor, Marc

Starting from the potential theoretic definition of the local times of a Markov process - when these exist - we obtain a Tanaka formula for the local times of symmetric L\'{e}vy processes. The most...

Exponential functionals of Lévy processes (2005)

Bertoin, Jean, Yor, Marc

This text surveys properties and applications of the exponential functional ∫0texp(−ξs)ds of real-valued Lévy processes ξ=(ξt,t≥0).

Exponential functionals of Brownian motion, I: Probability laws at fixed time (2005)

Matsumoto, Hiroyuki, Yor, Marc

This paper is the first part of our survey on various results about the distribution of exponential type Brownian functionals defined as an integral over time of geometric Brownian motion. Several...

Exponential functionals of Brownian motion, II: Some related diffusion processes (2005)

Matsumoto, Hiroyuki, Yor, Marc

This is the second part of our survey on exponential functionals of Brownian motion. We focus on the applications of the results about the distributions of the exponential functionals, which have...

A note on a.s. finiteness of perpetual integral functionals of diffusions (2005)

Salminen, Paavo, Yor, Marc

In this note, with the help of the boundary classification of diffusions, we derive a criterion of the convergence of perpetual integral functionals of transient real-valued diffusions. In the...

Options on Hedge Funds under the High Water Mark Rule (2005)

Atlan, Marc, Geman, Hélyette, Yor, Marc

The rapidly growing hedge fund industry has provided individual and institutional investors with new investment vehicles and styles of management. It has also brought forward a new form of...

Further examples of explicit Krein representations of certain subordinators (2005)

Donati-Martin, Catherine, Yor, Marc

In a previous paper , we have shown that the gamma subordinators may be represented as inverse local times of certain diffusions. In the present paper, we give such representations for other...

Some explicit Krein representations of certain subordinators, including the Gamma process (2005)

Donati-Martin, Catherine, Yor, Marc

We give a representation of the Gamma subordinator as a Krein functional of Brownian motion, using the known representations for stable subordinators and Esscher transforms. In particular, we have...

"Identities in law between quadratic functionals of bivariate Gaussian processes, through Fubini theorems and symmetric projections" (2005)

Peccati, Giovanni, Yor, Marc

We present three new identities in law for quadratic functionals of conditioned bivariate Gaussian processes. In particular, our results provide a two-parameter generalization of a celebrated...

Tanaka formula for symmetric Lévy processes (2005)

Salminen, Paavo, Yor, Marc

Starting from the potential theoretic definition of the local times of a Markov process - when these exist - we obtain a Tanaka formula for the local times of symmetric Lévy processes. The most...

Options on Hedge Funds under the High Water Mark Rule (2005)

Atlan, Marc, Geman, Hélyette, Yor, Marc

The rapidly growing hedge fund industry has provided individual and institutional investors with new investment vehicles and styles of management. It has also brought forward a new form of...

A note on a.s. finiteness of perpetual integral functionals of diffusions (2005)

Salminen, Paavo, Yor, Marc

In this note, with the help of the boundary classification of diffusions, we derive a criterion of the convergence of perpetual integral functionals of transient real-valued diffusions. In the...

Further examples of explicit Krein representations of certain subordinators (2005)

Donati-Martin, Catherine, Yor, Marc

In a previous paper , we have shown that the gamma subordinators may be represented as inverse local times of certain diffusions. In the present paper, we give such representations for other...

Some explicit Krein representations of certain subordinators, including the Gamma process (2005)

Donati-Martin, Catherine, Yor, Marc

We give a representation of the Gamma subordinator as a Krein functional of Brownian motion, using the known representations for stable subordinators and Esscher transforms. In particular, we have...

"Identities in law between quadratic functionals of bivariate Gaussian processes, through Fubini theorems and symmetric projections" (2005)

Peccati, Giovanni, Yor, Marc

We present three new identities in law for quadratic functionals of conditioned bivariate Gaussian processes. In particular, our results provide a two-parameter generalization of a celebrated...

Tanaka formula for symmetric Lévy processes (2005)

Salminen, Paavo, Yor, Marc

Starting from the potential theoretic definition of the local times of a Markov process - when these exist - we obtain a Tanaka formula for the local times of symmetric Lévy processes. The most...

Some Connections Between (Sub)Critical Branching Mechanisms and Bernstein Functions (2004)

Bertoin, Jean, Roynette, Bernard, Yor, Marc

We describe some connections, via composition, between two functional spaces: the space of (sub)critical branching mechanisms and the space of Bernstein functions. The functions ${\bf e}_\alpha: x\to...

Some Connections Between (Sub)Critical Branching Mechanisms and Bernstein Functions (2004)

Bertoin, Jean, Roynette, Bernard, Yor, Marc

We describe some connections, via composition, between two functional spaces: the space of (sub)critical branching mechanisms and the space of Bernstein functions. The functions ${\bf e}_\alpha: x\to...

Some Connections Between (Sub)Critical Branching Mechanisms and Bernstein Functions (2004)

Bertoin, Jean, Roynette, Bernard, Yor, Marc

We describe some connections, via composition, between two functional spaces: the space of (sub)critical branching mechanisms and the space of Bernstein functions. The functions ${\bf e}_\alpha: x\to...

Exponential Functionals of Lévy Processes (2004)

Bertoin, Jean, Yor, Marc

This text surveys properties and applications of the exponential functional $\int_{0}^{t}\exp(-\xi_s)ds$ of real-valued L\'evy processes $\xi=(\xi_t, t\geq0)$.

Exponential Functionals of Lévy Processes (2004)

Bertoin, Jean, Yor, Marc

This text surveys properties and applications of the exponential functional $\int_{0}^{t}\exp(-\xi_s)ds$ of real-valued L\'evy processes $\xi=(\xi_t, t\geq0)$.

On local martingale and its supremum: harmonic functions and beyond (2004)

Obloj, Jan, Yor, Marc

We discuss certain facts involving a continuous local martingale $N$ and its supremum $\overline{N}$. A complete characterization of $(N,\overline{N})$-harmonic functions is proposed. This yields an...

On local martingale and its supremum: harmonic functions and beyond (2004)

Obloj, Jan, Yor, Marc

We discuss certain facts involving a continuous local martingale $N$ and its supremum $\overline{N}$. A complete characterization of $(N,\overline{N})$-harmonic functions is proposed. This yields an...

On local martingale and its supremum: harmonic functions and beyond (2004)

Obloj, Jan, Yor, Marc

We discuss certain facts involving a continuous local martingale $N$ and its supremum $\bar{N}$. A complete characterization of $(N,\bar{N})$-harmonic functions is proposed. This yields an important...

Harnesses, Levy bridges and Monsieur Jourdain (2004)

Mansuy, Roger, Yor, Marc

Relations between so-called harness processes and initial enlargements of the filtration of a Levy process with its positions at fixed times are investigated.

A definition and some characteristic properties of pseudo-stopping times (2004)

Nikeghbali, Ashkan, Yor, Marc

Recently, D. Williams \cite{williams} gave an explicit example of a random time $\rho $ associated with Brownian motion such that $\rho $ is not a stopping time but...

Where did the Brownian particle go? (2004)

Pemantle, Robin, Peres, Yuval, Pitman, Jim, Yor, Marc

Consider the radial projection onto the unit sphere of the path a d-dimensional Brownian motion W, started at the center of the sphere and run for unit time. Given the occupation measure mu of this...

Asymptotic laws for compositions derived from transformed subordinators (2004)

Gnedin, Alexander, Pitman, Jim, Yor, Marc

A random composition of $n$ appears when the points of a random closed set $\widetilde{\mathcal{R}}\subset[0,1]$ are used to separate into blocks $n$ points sampled from the uniform distribution. We...

Perpetual integral functionals as hitting and occupation times (2004)

Salminen, Paavo, Yor, Marc

Let $X$ be a linear diffusion and $f$ a non-negative, Borel measurable function. We are interested in finding conditions on $X$ and $f$ which imply that the perpetual integral functional $$...

Some properties of the Wishart processes and a matrix extension of the Hartman-Watson laws (2004)

Donati-Martin, Catherine, Doumerc, Yan, Matsumoto, Hiroyuki, Yor, Marc

The aim of this paper is to discuss for Wishart processes some properties which are analogues of the corresponding well-known ones for Bessel processes. In fact, we mainly concentrate on the local...

A parallel between Brownian bridges and gamma bridges (2004)

Yor, Marc, Émery, Michel

Some properties of the Gamma bridges (obtained by conditioning the Gamma subordinator to take a given value at a given time) are investigated; similarities with the Brownian bridges are emphasized.

Some Connections Between (Sub)Critical Branching Mechanisms and Bernstein Functions (2004)

Bertoin, Jean, Roynette, Bernard, Yor, Marc

We describe some connections, via composition, between two functional spaces: the space of (sub)critical branching mechanisms and the space of Bernstein functions. The functions ${\bf e}_\alpha: x\to...

Exponential Functionals of Lévy Processes (2004)

Bertoin, Jean, Yor, Marc

This text surveys properties and applications of the exponential functional $\int_{0}^{t}\exp(-\xi_s)ds$ of real-valued L\'evy processes $\xi=(\xi_t, t\geq0)$.

On local martingale and its supremum: harmonic functions and beyond (2004)

Obloj, Jan, Yor, Marc

We discuss certain facts involving a continuous local martingale $N$ and its supremum $\overline{N}$. A complete characterization of $(N,\overline{N})$-harmonic functions is proposed. This yields an...

Some Connections Between (Sub)Critical Branching Mechanisms and Bernstein Functions (2004)

Bertoin, Jean, Roynette, Bernard, Yor, Marc

We describe some connections, via composition, between two functional spaces: the space of (sub)critical branching mechanisms and the space of Bernstein functions. The functions ${\bf e}_\alpha: x\to...

Exponential Functionals of Lévy Processes (2004)

Bertoin, Jean, Yor, Marc

This text surveys properties and applications of the exponential functional $\int_{0}^{t}\exp(-\xi_s)ds$ of real-valued L\'evy processes $\xi=(\xi_t, t\geq0)$.

On local martingale and its supremum: harmonic functions and beyond (2004)

Obloj, Jan, Yor, Marc

We discuss certain facts involving a continuous local martingale $N$ and its supremum $\overline{N}$. A complete characterization of $(N,\overline{N})$-harmonic functions is proposed. This yields an...

Universit¶e Paris-Dauphine and ESSEC (2004)

Peter Carr, Dilip B. Madan, Marc Yor

We de¯ne the class of local L¶evy processes. These are L¶evy processes time changed by an inhomogeneous local speed function. The local speed function is a deterministic function of time and the...

A survey and some generalizations of Bessel processes (2003)

Göing-Jaeschke, Anja, Yor, Marc

Bessel processes play an important role in financial mathematics because of their strong relation to financial models such as geometric Brownian motion or Cox-Ingersoll-Ross processes. We are...

On Dufresne's relation between the probability laws of exponential functionals of Brownian motions with different drifts (2003)

Matsumoto, Hiroyuki, Yor, Marc

Denote by αt(μ) the probability law of At(μ) = ∫0texp(2(Bs+μ s))ds for a Brownian motion {Bs, s ≥ 0}. It is well known that αt(μ) is of interest in a number of domains, e.g. mathematical...

Hitting, occupation and inverse local times of one-dimensional diffusions: martingale and excursion approaches (2003)

Pitman, Jim, Yor, Marc

Basic relations between the distributions of hitting, occupation and inverse local times of a one-dimensional diffusion process $X$, first discussed by It\^o and McKean, are reviewed from the...

A survey and some generalizations of Bessel processes (2003)

Anja Göing-jaeschke, Marc Yor

Bessel processes play an important role in financial mathematics because of their strong relation to financial processes like geometric Brownian motion or CIR processes. We are interested in the...

Making Markov martingales meet marginals: with explicit constructions (2002)

Madan, Dilip B., Yor, Marc

We present three generic constructions of martingales that all have the Markov property with known and prespecified marginal densities. These constructions are further invest\-igated for the special...

The fine structure of asset returns: an empirical investigation (2002)

Carr, Peter, Geman, Hélyette, Madan, Dilip B., Yor, Marc

We investigate the importance of diffusion and jumps in a new model for asset returns. In contrast to standard models, we allow for jump components displaying finite or infinite activity and...

The fine structure of asset returns: an empirical investigation (2002)

Carr, Peter, Geman, Hélyette, Madan, Dilip B., Yor, Marc

We investigate the importance of diffusion and jumps in a new model for asset returns. In contrast to standard models, we allow for jump components displaying finite or infinite activity and...

The fine structure of asset returns: an empirical investigation (2002)

Carr, Peter, Geman, Hélyette, Madan, Dilip B., Yor, Marc

We investigate the importance of diffusion and jumps in a new model for asset returns. In contrast to standard models, we allow for jump components displaying finite or infinite activity and...

The fine structure of asset returns: an empirical investigation (2002)

Carr, Peter, Geman, Hélyette, Madan, Dilip B., Yor, Marc

We investigate the importance of diffusion and jumps in a new model for asset returns. In contrast to standard models, we allow for jump components displaying finite or infinite activity and...

On independent times and positions for Brownian motions (2002)

De Meyer, Bernard, Roynette, Bernard, Vallois, Pierre, Yor, Marc

Let $(B_t ; t \ge 0)$, $\big(\mbox{resp. }((X_t, Y_t) ; t \ge 0)\big)$ be a one (resp. two) dimensional Brownian motion started at 0. Let $T$ be a stopping time such that $(B_{t \wedge T} ; t \ge 0)$...

Linear transformations of two independent Brownian motions and orthogonal decompositions of Brownian filtrations (2002)

Wu, Ching-Tang, Yor, Marc

Brownian motions defined as linear transformations of two independent Brownian motions are studied, together with certain orthogonal decompositions of Brownian filtrations

On Subordinators, Self-Similar Markov Processes and Some Factorizations of the Exponential Variable (2001)

Bertoin, Jean; Universite Pierre Et Marie Curie; Jbe@ccr.jussieu.fr, Yor, Marc; Universite Pierre Et Marie Curie; Neil.O.connell@ens.fr

Let $xi$ be a subordinator with Laplace exponent $Phi$, $I=int_{0}^{infty}exp(-xi_s)ds$ the so-called exponential functional, and $X$ (respectively, $hat X$) the self-similar Markov process obtained...

A Representation for Non-Colliding Random Walks (2001)

O'Connell, Neil; BRIMS, HP Labs; Neil.O.connell@ens.fr, Yor, Marc; Universite Pierre Et Marie Curie; Neil.O.connell@ens.fr

We define a sequence of mappings $Gamma_k:D_0(R_+)^kto D_0(R_+)^k$ and prove the following result: Let $N_1,ldots,N_n$ be the counting functions of independent Poisson processes on $R_+$ with...

Large deviations for the Bessel clock (2001)

Yor, Marc, Zani, Marguerite

We show the law of large numbers, the central limit theorem and the large-deviation principle for the Bessel clock ∈t0t\rm d}s/(Rs(ν))2, where (Rt(ν), t≥0) is a Bessel process of index ν>0. We...

On the distribution of ranked heights of excursions of a Brownian bridge (2001)

Pitman, Jim, Yor, Marc

The distribution of the sequence of ranked maximum and minimum values attained during excursions of a standard Brownian bridge $(B^{br}_t, 0 \le t \le 1)$ is described. The height $M^{br +}_j$of the...

An analogue of Pitman's {$2M-X$} theorem for exponential Wiener functionals. II. The role of the generalized inverse Gaussian laws (2001)

Matsumoto, Hiroyuki, Yor, Marc

In Part I of this work, we have shown that the stochastic process $Z^{(\mu)}$ defined by (8.1) below is a diffusion process, which may be considered as an extension of Pitman's $2M-X$ theorem. In...

Some absolute continuity relationships for certain anticipative transformations of geometric Brownian motions (2001)

Donati-Martin, Catherine, Matsumoto, Hiroyuki, Yor, Marc

We present some absolute continuity relationships between the probability laws of a geometric Brownian motion $e^{(\mu)}=\{e_t^{(\mu)},t\geqq0\}$ and its images by certain transforms $T_\alpha$...

On certain Markov processes attached to exponential functionals of Brownian motion: application to Asian options. (2001)

Yor, Marc, Ghomrasni, R., Donati-Martin, C.

We obtain a closed formula for the Laplace transform of the first moment of certain exponential functionals of Brownian motion with drift, which gives the price of Asian options. The proof relies on...

Non-symmetric hitting distributions on the hyperbolic half-plane and subordinated perpetuities (2001)

Casadio Tarabusi, Enrico, Figà Talamanca, Alessandro, Yor, Marc, Baldi, Paolo

We study the law of functionals whose prototype is ?0+8 eBs(?) dWs(µ), where B(?) and W(µ) are independent Brownian motions with drift. These functionals appear naturally in risk theory as well as...

Term structures of credit spreads with incomplete accounting information (2001)

Darrell Duffie, David L, Martin Jacobsen, Marliese Uhrig-homburg, Marc Yor, Josef Zechner, ...

Abstract: We study the implications of imperfect information for term structures of credit spreads on corporate bonds. We suppose that bond investors cannot observe the issuer’s assets directly,...

Banc of America Securities (2001)

Peter Carr, Dilip B. Madan, Marc Yor

Three processes re°ecting persistence of volatility are formulated by evaluating three L¶evy processes at a time change given by the integral of a square root process. A positive stock price...

Stochastic Volatility for Lévy Processes (2001)

Peter Carr, Hélyette Geman, Dilip B. Madan, Marc Yor

Three processes reecting persistence of volatility are formulated by evaluating three Levy processes at a time change given by the integral of a square root process. A positive stock price process is...

Some measure-valued Markov processes attached to occupation times of Brownian motion (2000)

Donati-Martin, Catherine, Yor, Marc

We study the positive random measure $\Pi_t (\omega, \d y) = l_t^{B_t -y}\d y$ , where $(l^a_t; a \in \R, t > 0)$ denotes the family of local times of the one-dimensional Brownian motion B. We prove...

An analogue of Pitman's {$2M-X$} theorem for exponential Wiener functionals. I. A time-inversion approach (2000)

Matsumoto, Hiroyuki, Yor, Marc

Let $\{B_t^{(\mu)},t\geqq0\}$ be a one-dimensional Brownian motion with constant drift $\mu\in{\bf R}$ starting from $0$. In this paper we show that $$ Z_t^{(\mu)} = \exp(-B_t^{(\mu)}) \int_0^t...

The Fine Structure of Asset Returns: An Empirical Investigation (2000)

Peter Carr, Hélyette Geman, Dilip B. Madan, Marc Yor

We investigate the relative importance of diffusion and jumps in a new jump diffusion model for asset returns. In contrast to the standard modelling of jumps for asset returns, the jump component of...

Time Changes Hidden In Brownian Subordination (2000)

Helyette Geman, Dilip B. Madan, Marc Yor

We consider Brownian motion evaluated at a time change given by an independent purely discontinuous subordinator and inquire into the relation between the quadratic variation of the process and the...

Some asymptotic properties of the local time of the uniform empirical process (1999)

Csörgö, Miklós, Shi, Zhan, Yor, Marc

We study the almost sure asymptotic properties of the local time of the uniform empirical process. In particular, we obtain two versions of the law of the iterated logarithm for the integral of the...

Some Changes of Probabilities Related to a Geometric Brownian Motion Version of Pitman's 2M-X Theorem (1999)

Matsumoto, Hiroyuki; Nagoya University; Matsu@info.human.nagoya-u.ac.jp, Yor, Marc; Universite Pierre Et Marie Curie; Neil.O.connell@ens.fr

Rogers-Pitman have shown that the sum of the absolute value of $B^{(mu)}$, Brownian motion with constant drift $mu$, and its local time $L^{(mu)}$ is a diffusion $R^{(mu)}$. We exploit the...

The Law of the Maximum of a Bessel Bridge (1999)

Pitman, Jim; University Of California, Berkeley; Pitman@stat.berkeley.edu, Yor, Marc; Université Pierre Et Marie Curie; Pitman@stat.berkeley.edu

Let $M_d$ be the maximum of a standard Bessel bridge of dimension $d$. A series formula for $P(M_d le a)$ due to Gikhman and Kiefer for $d = 1,2, ldots$ is shown to be valid for all real $d >0$....

Laplace transforms related to excursions of a one-dimensional diffusion (1999)

Pitman, Jim, Yor, Marc

Various known expressions in terms of hyperbolic functions for the Laplace transforms of random times related to one-dimensional Brownian motion are derived in a unified way by excursion theory and...

Continuous Martingales and Brownian Motion (1999)

Revuz, Daniel, Yor, Marc

Libro de probabilidad. Contenido: Introducción; Martingalas; Procesos de Markov; Integración estocástica; Representación de martingalas; Hora media local; Generadores y tiempo de inversión;...

Continuous Martingales and Brownian Motion / D. Revuz, M. Yor. (1999)

Revuz, Daniel, Yor, Marc

Libro de probabilidad. Contenido: Introducción; Martingalas; Procesos de Markov; Integración estocástica; Representación de martingalas; Hora media local; Generadores y tiempo de inversión;...

The laws of Brownian local time integrals (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain some identities in law and some limit theorems for integrals of the type $\int_{0}^{t}\varphi(s)d{\rm L}_{s}$. Here $\varphi$ is a positive locally bounded Borel function and ${\rm L}_{t}$...

Abel transform and integrals of Bessel local times (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We study integrals of the type $\int_{0}^{t}\varphi(s)dL_{s}$, where $\varphi$ is a positive locally bounded Borel function and $L_{t}$ denotes the local time at level 0 of a Bessel process of...

The laws of Brownian local time integrals (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain some identities in law and some limit theorems for integrals of the type $\int_{0}^{t}\varphi(s)d{\rm L}_{s}$. Here $\varphi$ is a positive locally bounded Borel function and ${\rm L}_{t}$...

Abel transform and integrals of Bessel local times (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We study integrals of the type $\int_{0}^{t}\varphi(s)dL_{s}$, where $\varphi$ is a positive locally bounded Borel function and $L_{t}$ denotes the local time at level 0 of a Bessel process of...

The laws of Brownian local time integrals (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain some identities in law and some limit theorems for integrals of the type $\int_{0}^{t}\varphi(s)d{\rm L}_{s}$. Here $\varphi$ is a positive locally bounded Borel function and ${\rm L}_{t}$...

Abel transform and integrals of Bessel local times (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We study integrals of the type $\int_{0}^{t}\varphi(s)dL_{s}$, where $\varphi$ is a positive locally bounded Borel function and $L_{t}$ denotes the local time at level 0 of a Bessel process of...

The laws of Brownian local time integrals (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We obtain some identities in law and some limit theorems for integrals of the type $\int_{0}^{t}\varphi(s)d{\rm L}_{s}$. Here $\varphi$ is a positive locally bounded Borel function and ${\rm L}_{t}$...

Abel transform and integrals of Bessel local times (1999)

Gradinaru, Mihai, Roynette, Bernard, Vallois, Pierre, Yor, Marc

We study integrals of the type $\int_{0}^{t}\varphi(s)dL_{s}$, where $\varphi$ is a positive locally bounded Borel function and $L_{t}$ denotes the local time at level 0 of a Bessel process of...

Laplace transforms related to excursions of a one-dimensional diffusion (1999)

Jim Pitman, Marc Yor

Various known expressions in terms of hyperbolic functions for the Laplace transforms of random times related to one-dimensional Brownian motion are derived in a unified way by excursion theory and...

Probability laws related to the Jacobi theta and Riemann zeta functions, and Brownian excursions (1999)

Philippe Biane, Jim Pitman, Marc Yor

This paper reviews known results which connect Riemann's integral representations of his zeta function, involving Jacobi's theta function and its derivatives, to some particular probability...

A Survey and Some Generalizations of Bessel Processes (1999)

Anja Göing-Jaeschke, Marc Yor

Bessel processes play an important role in financial mathematics because of their strong relation to financial processes like geometric Brownian motion or CIR processes. We are interested in the...

Where Did The Brownian Particle Go? (1999)

Robin Pemantle, Yuval Peres, Jim Pitman, Marc Yor

Consider the radial projection onto the unit sphere of the path a d-dimensional Brownian motion W run for unit time. Given the occupation measure ¯ of this projected path, what can be said about the...

On the distribution of ranked heights of excursions of a Brownian bridge (1999)

Jim Pitman, Marc Yor

The distribution of the sequence of ranked maximum and minimum values attained during excursions of a standard Brownian bridge (B br t ; 0 t 1) is described. The height M br+ j of the jth highest...

Probability laws related to the Jacobi theta and Riemann zeta functions, and Brownian excursions (1999)

Philippe Biane, Jim Pitman, Marc Yor

Abstract. This paper reviews known results which connect Riemann’s integral representations of his zeta function, involving Jacobi’s theta function and its derivatives, to some particular...

invariance under a family (1999)

Jim Pitman, Marc Yor

properties of the arc-sine law related to its

Canonical decomposition of linear transformations of two independent Brownian motions motivated by models of insider trading (1999)

Ching-tang Wu, Marc Yor

Abstract We consider certain classes of linear transformations of two independent Brownian motions and study their canonical decomposition as semimartingales in their own filtration. In particular we...

Laplace transforms related to excursions of a one-dimensional diffusion (1999)

Jim Pitman, Marc Yor

Various known expressions in terms of hyperbolic functions for the Laplace transforms of random times related to one-dimensional Brownian motion are derived in a uni ed way by excursion theory and...

Intégrales stochastiques de processus anticipants et projections duales prévisibles (1999)

Yor, Marc, Donati-Martin, C.

We define a stochastic anticipating integral $\delta^\mu$ with respect to Brownian motion, associated to a non adapted increasing process $(\mu_t)$, with dual projection $t$. The integral $\delta^\mu...

Random Brownian scaling identities and splicing of Bessel processes (1998)

Pitman, Jim, Yor, Marc

An identity in distribution due to Knight for Brownian motion is extended in two different ways: first by replacing the supremum of a reflecting Brownian motion by the range of an unreflected...

Exponential functionals of Brownian motion and disordered systems (1998)

Comtet, Alain, Monthus, Cécile, Yor, Marc

The paper deals with exponential functionals of the linear Brownian motion which arise in different contexts, such as continuous time finance models and one-dimensional disordered models. We study...

Beta-gamma random variables and intertwining relations between certain Markov processes (1998)

Yor, Marc, Petit, Frédérique, Carmona, Philippe

In this paper, we study particular examples of the intertwining relation Qt? = ?Pt between two Markov semi-groups (Pt, t = 0) defined respectively on (E,e) and (F,F), via the Markov kernel ?: (E,e) ?...

Random Brownian scaling identities and splicing of Bessel processes (1998)

Jim Pitman, Jim Pitman, Marc Yor, Marc Yor

An identity in distribution due to F. Knight for Brownian motion is extended in two different ways: firstly by replacing the supremum of a reflecting Brownian motion by the range of an unreflected...

On the laws of homogeneous functionals of the Brownian bridge (1998)

Philippe Carmona, Erique Petit, Jim Pitman, Marc Yor

Abstract. We develop a general and elementary method, which allows in particular to compute the distributions of a large number of interesting homogeneous functionals of the standard Brownian bridge....

The law of the maximum of a Bessel bridge (1998)

Jim Pitman, Marc Yor

Let M ffi be the maximum of a standard Bessel bridge of dimension ffi . A series formula for P (M ffi a) due to Gikhman and Kiefer for ffi = 1; 2; : : : is shown to be valid for all real ffi ? 0....

Some Asymptotic Properties of the Local Time of the Uniform Empirical Process (1998)

Miklós Csörgo, Org O, Zhan Shi, Marc Yor

this paper we are interested in strong limit theorems for the local time of ff n . We first recall two important results. For notational convenience, we write

Random Brownian scaling identities and splicing of Bessel processes (1998)

Jim Pitman, Jim Pitman, Marc Yor, Marc Yor

An identity in distribution due to F. Knight for Brownian motion is extended in two di erent ways: rstly by replacing the supremum of a re ecting Brownian motion by the range of an unre ected...

Path decompositions of a Brownian bridge related to the ratio of its maximum and amplitude (1998)

Jim Pitman, Marc Yor

We give two new proofs of Csaki's formula for the law of the ratio 1, Q of the maximum relative to the amplitude (i.e. the maximum minus minimum) for a standard Brownian bridge. The second of...

The two-parameter Poisson-Dirichlet distribution derived from a stable subordinator (1997)

Pitman, Jim, Yor, Marc

The two-parameter Poisson-Dirichlet distribution, denoted $\mathsf{PD}(\alpha, \theta)$ is a probability distribution on the set of decreasing positive sequences with sum 1. The usual...

On the lengths of excursions of some Markov processes (1997)

Jim Pitman, Marc Yor

Results are obtained regarding the distribution of the ranked lengths of component intervals in the complement of the random set of times when a recurrent Markov process returns to its starting...

On the distribution and asymptotic results for exponential functionals of Lévy processes (1997)

Philippe Carmona, Erique Petit, Marc Yor

Abstract. The aim of this note is to study the distribution and the asymptotic behavior of the exponential functional A t:= R t

On the distribution of ranked heights of excursions of a Brownian bridge (1997)

Jim Pitman, Marc Yor

The distribution of the sequence of ranked maximum and minimum values attained during excursions of a standard Brownian bridge (B br t; 0 t 1) is described. The height M br+ j sion of the bridge has...

On the distribution of ranked heights of excursions of a Brownian bridge (1997)

Jim Pitman, Marc Yor

The distribution of the sequence of ranked maximum and minimum values attained during excursions of a standard Brownian bridge �B br t � 0 ≤ t ≤ 1 � is described. The height M br+ j of the...

The two parameter Poisson–Dirichlet (1997)

Jim Pitman, Marc Yor

distribution derived from a stable subordinator. by

Random Discrete Distributions Derived from Self-Similar Random Sets (1996)

Pitman, Jim; University Of California, Berkeley; Pitman@stat.berkeley.edu, Yor, Marc; Université Pierre Et Marie Curie; Pitman@stat.berkeley.edu

A model is proposed for a decreasing sequence of random variables $(V_1, V_2, cdots)$ with $sum_n V_n = 1$, which generalizes the Poisson-Dirichlet distribution and the distribution of ranked lengths...

Exponential functionals of Brownian motion and disordered systems (1996)

Comtet, Alain, Monthus, Cécile, Yor, Marc

The paper deals with exponential functionals of the linear Brownian motion which arise in different contexts such as continuous time finance models and one-dimensional disordered models. We study...

Exponential functionals of Brownian motion and disordered systems (1996)

Comtet, Alain, Monthus, Cecile, Yor, Marc

The paper deals with exponential functionals of the linear Brownian motion which arise in different contexts such as continuous time finance models and one-dimensional disordered models. We study...

Exponential functionals of Brownian motion and disordered systems (1996)

Comtet, Alain, Monthus, Cecile, Yor, Marc

The paper deals with exponential functionals of the linear Brownian motion which arise in different contexts such as continuous time finance models and one-dimensional disordered models. We study...

Random Discrete Distributions Derived From Self-Similar Random Sets (1996)

Jim Pitman, Marc Yor

: A model is proposed for a decreasing sequence of random variables (V 1 ; V 2 ; \Delta \Delta \Delta) with P n V n = 1, which generalizes the Poisson-Dirichlet distribution and the distribution of...

Markov processes (1996)

Jim Pitman, Marc Yor

On the lengths of excursions of some

To appearinSeminaire de Probabilites XXXI (1996)

Jim Pitman, Marc Yor

On the relative lengths of excursions derived from a stable subordinator by

The two-parameter Poisson-Dirichlet distribution derived from a stable subordinator. (1995)

Jim Pitman, Marc Yor

The two-parameter Poisson-Dirichlet distribution, denoted pd(ff; `), is a distribution on the set of decreasing positive sequences with sum 1. The usual Poisson-Dirichlet distribution with a single...

Stationary excursions (1986)

Jim Pitman, Marc Yor

Hitting, occupation, and inverse local times of one-dimensional di usions: martingale and

Canonical decomposition of linear transformations of two independent Brownian motions

Föllmer, Hans, Wu, Ching-Tang, Yor, Marc

Motivated by the Kyle-Back model of “insider trading”, we consider certain classes of linear transformations of two independent Brownian motions and study their canonical decomposition as...

Canonical decomposition of linear transformations of two independent Brownian motions

Föllmer, Hans, Wu, Ching-Tang, Yor, Marc

Motivated by the Kyle-Back model of “insider trading”, we consider certain classes of linear transformations of two independent Brownian motions and study their canonical decomposition as...

Correlation and the pricing of risks

Marc Atlan, Hélyette Geman, Dilip Madan, Marc Yor

Kernel pricing, Change of measure, Catastrophic risk pricing, Self sufficient filtrations, G10, G12, G13,

Lévy processes in finance: a remedy to the non-stationarity of continuous martingales

Marc Yor, Boris Leblanc

In this note, we prove that under some minor conditions on $\sigma$, if a martingale $X_t = \int_0^t \sigma_u dW_u $ satisfies, for every given pair $u \geq 0, \, \xi \geq 0$,...

Comments on the life and mathematical legacy of Wolfgang Doeblin

Marc Yor, Bernard Bru

This article contains the translation into English of the main results found in the Comptes Rendus Volume of December 2000, dedicated to Wolfgang Doeblin's sealed envelope sent to the Académie des...

Stochastic volatility, jumps and hidden time changes

Marc Yor, Dilip B. Madan, Hélyette Geman

Stochastic volatility and jumps are viewed as arising from Brownian subordination given here by an independent purely discontinuous process and we inquire into the relation between the realized...

Pricing options on realized variance

Peter Carr, Hélyette Geman, Dilip Madan, Marc Yor

Models which hypothesize that returns are pure jump processes with independent increments have been shown to be capable of capturing the observed variation of market prices of vanilla stock options...

Option prices as probabilities

Madan, D., Roynette, B., Yor, Marc

Four distribution functions are associated with call and put prices seen as functions of their strike and maturity. The random variables associated with these distributions are identified when the...

On an extension of Dufresne's relation between exponential Brownian functionals from opposite drifts to two different drifts: a short proof

Hariya, Yuu, Yor, Marc

In this note, we show how to deduce some relationships between exponential functionals of Brownian motions with two different drifts from the case where the drifts are opposite from each other. We...

Interpretation via Brownian motion of some independence properties between GIG and gamma variables

Matsumoto, Hiroyuki, Yor, Marc

In the course of our investigations of exponential Brownian functionals (Nagoya Math. J. 162 (2001) 65) we noticed, with the help of some previous work by Letac and Seshadri (Z. Wahr. verw. Geb. 62...

On positive and negative moments of the integral of geometric Brownian motions

Donati-Martin, Catherine, Matsumoto, Hiroyuki, Yor, Marc

We present explicit formulae for the positive and negative moments of an exponential Wiener functional, which is defined as the integral with respect to time of geometric Brownian motion and plays an...

Measuring the "non-stopping timeness" of ends of previsible sets

Ju-Yi Yen, Marc Yor

In this paper, we propose several "measurements" of the "non-stopping timeness" of ends g of previsible sets, such that g avoids stopping times, in an ambiant filtration. We then study several...

From Black-Scholes and Dupire formulae to last passage times of local martingales. Part A : The infinite time horizon

Amel Bentata, Marc Yor

These notes are the first half of the contents of the course given by the second author at the Bachelier Seminar (February 8-15-22 2008) at IHP. They also correspond to topics studied by the first...