Pii Sx, Qiang Du, Benyu Guo, Jie Shen
The purpose of this note is to correct an error in the proof of Proposition 2.4 in [1]. The inequality ||g(dM)||1 ≤ c||dM | | 2 L 4|dM |1 on line 18 of page 741 in [1] is not correct. We now revise...
A chart of backward errors for singly and doubly structured eigenvalue problems (2003)
Abstract. We present a chart of structured backward errors for approximate eigenpairs of singly and doubly structured eigenvalue problems. We aim to give, wherever possible, formulae that are...
Yousef Saad, Jun Zhang, Pii Sx
Abstract. We introduce block versions of the multielimination incomplete LU (ILUM) factorization preconditioning technique for solving general sparse unstructured linear systems. These...
. In this paper, we introduce multiparameter generalizations of the linear and nonlinear iterative Richardson methods for solving systems of linear and nonlinear equations. The new algorithms are...
Distributed Anonymous Mobile Robots: Formation Of Geometric Patterns (1999)
Ichiro Suzuki, Masafumi Yamashita, Pii Sx
Consider a system of multiple mobile robots in which each robot, at infinitely many unpredictable time instants, observes the positions of all the robots and moves to a new position determined by the...
Restoring Images Degraded by Spatially Variant Blur (1998)
James G. Nagy, Dianne P. O'Leary, Pii Sx
. Restoration of images that have been blurred by the e#ects of a Gaussian blurring function is an ill-posed but well-studied problem. Any blur that is spatially invariant can be expressed as a...
Genericity, Randomness, And Polynomial-Time Approximations (1998)
. Polynomial-time safe and unsafe approximations for intractable sets were introduced by Meyer and Paterson [Technical Report TM-126, Laboratory for Computer Science, MIT, Cambridge, MA, 1979] and...