Abstract

This paper is concerned with defining causality semantics for infinite executions of Petri nets with inhibitor arcs. We first show how one can deal with infinite step sequences and the corresponding occurrence nets (processes) and causal structures. We then discuss how to improve the succinctness of both finite and infinite processes generated from step sequences. In the latter case, the proposed constructions avoid infinite branching in the case of bounded nets.

Keywords

theory of concurrency, Petri nets, weighted inhibitor arcs, causality semantics, infinite processes, occurrence nets, step sequences