We present an extension of the πI-calculus with formal sums of terms. The study of the properties of this sum reveals that its neutral element can be used to make assumptions abo...
Abstract. Recently, new cost-based filtering algorithms for shorter-path constraints have been developed. However, so far only the theoretical properties of shorter-path constrain...
Thorsten Gellermann, Meinolf Sellmann, Robert Wrig...
Abstract. A policy is a statement that an action is permitted or forbidden if certain conditions hold. We introduce a language for reasoning about policies called Rosetta. What mak...
We consider the role played by the concept of action in AI. We first briefly summarize the advantages and limitations of past approaches to taking the concept as primitive, as emb...
In the analysis of security protocols, methods and tools for reasoning about protocol behaviors have been quite effective. We aim to expand the scope of those methods and tools. W...