We introduce a new notion of bisimulation for showing contextual equivalence of expressions in an untyped lambda-calculus with an explicit store, and in which all expressed values...
We propose union types for statically typed class-based objectoriented languages as a means to enhance the flexibility of subtyping. As its name suggests, a union type can be con...
Debugging is one of the essential parts of the software development cycle. However, the usual debugging techniques used in imperative languages such as the step by step execution ...
Ensuring correctness of software by formal methods is a very relevant and widely studied problem. Automatic verification of software using model checkers from the state space exp...
Abstract. This paper studies computational issues related to the problem of reasoning about actions and change (RAC) by exploiting its link with the Answer Set Programming paradigm...
Yannis Dimopoulos, Antonis C. Kakas, Loizos Michae...