The frame problem was originally de ned in the context of the situation calculus. The problem also manifests itself in more sophisticated temporal logics that can represent interv...
A refutation mechanism is introduced into logic programming, dual to the usual proof mechanism; then negation is treated via refutation. A four-valued logic is appropriate for the...
A lightweight logical approach to race-free sharing of heap storage between concurrent threads is described, based on the notion of permission to access. Transfer of permission be...
Richard Bornat, Cristiano Calcagno, Peter W. O'Hea...
In modal logic, when adding a syntactic property to an axiomatisation, this property will semantically become true in all models, in all situations, under all circumstances. For i...
Hans P. van Ditmarsch, Wiebe van der Hoek, Barteld...
tion and Abstract Separation Logic Cristiano Calcagno Imperial College, London Peter W. O’Hearn Queen Mary, University of London Hongseok Yang Queen Mary, University of London S...
Cristiano Calcagno, Peter W. O'Hearn, Hongseok Yan...