The paper presents a survey of the VSE system, a kind of CASE-tool for formal software development. It is a summary of a tutorial presentation describing methodology, formalisms, ...
This paper explores the concept of locality in proofs of global safety properties of asynchronously composed, multi-process programs. Model checking on the full state space is ofte...
Abstract. We present a theory of proof denotations in classical propologic. The abstract definition is in terms of a semiring of weights, and two concrete instances are explored. ...
An important aim of diagrammatic reasoning is to make it easier for people to create and understand logical arguments. We have worked on spider diagrams, which visually express log...