| Edinburgh EH9 3JZ Scotland (2008) | |||||||||||||
Abstract | |||||||||||||
| We outline a possible logic that will allow us to give a unified approach to reasoning about computational effects. The logic is given by extending Moggi’s computational λ-calculus by basic types and a signature, the latter given by constant symbols, function symbols, and operation symbols, and by including a µ operator. We give both syntax and semantics for the logic except for µ. We consider a number of sound and complete classes of models, all given in category-theoretic terms. We illustrate the ideas with some of our leading examples of computational effects, and we observe that operations give rise to natural modalities. 1 | |||||||||||||
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