On Interval Process Semantics of Petri Nets with Inhibitor Arcs

Interval order semantics of Petri nets with inhibitor arc is discussed. Both the operational semantics and process, i.e. concurrent history, semantics are defined and their mutual relationship is discussed. It is shown that if operational semantics is restricted to stratified orders (i.e. step sequences) the proposed model is equivalent to models based on step processes and comtraces.