Logic programming is based on the idea that computation is controlled inference. The Extended Andorra Model provides a very powerful framework that supports both co-routining and p...
The Unified Modeling Language (UML) is a set of notations for modelling object-oriented systems. It has become the de facto standard. Most of its notations are diagrammatic. An ex...
Predicate dispatching generalizes previous method dispatch mechanisms by permitting arbitrary predicates to control method applicability and by using logical implication between pr...
We present a new approach to an interactive design and analysis environment for visual languages. The main components, i.e., editor, animator, and interpreter, are introduced. The...
Investigating soundness and completeness of verification calculi for imperative programming languages is a challenging task. Incorrect results have been published in the past. We t...