When to Move to Transfer Nets On the limits of Petri nets as models for process calculi

Gianluigi Zavattaro 1, 2, *
* Corresponding author
2 FOCUS - Foundations of Component-based Ubiquitous Systems
CRISAM - Inria Sophia Antipolis - Méditerranée , DISI - Dipartimento di Informatica - Scienza e Ingegneria [Bologna]
Abstract : Pierpaolo Degano has been an influential pioneer in the investigation of Petri nets as models for concurrent process calculi (see e.g. the well-known seminal work by Degano–De Nicola–Montanari also known as DDM88). In this paper, we address the limits of classical Petri nets by discussing when it is necessary to move to the so-called Transfer nets, in which transitions can also move to a target place all the tokens currently present in a source place. More precisely, we consider a simple calculus of processes that interact by generating/consuming messages into/from a shared repository. For this calculus classical Petri nets can faithfully model the process behavior. Then we present a simple extension with a primitive allowing processes to atomically rename all the data of a given kind. We show that with the addition of such primitive it is necessary to move to Transfer nets to obtain a faithful modeling.
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Gianluigi Zavattaro. When to Move to Transfer Nets On the limits of Petri nets as models for process calculi. Programming Languages with Applications to Biology and Security, 9465, Springer, pp.339-353, 2015, Lecture Notes in Computer Science, 978-3-319-25526-2. ⟨10.1007/978-3-319-25527-9_22⟩. ⟨hal-01233419⟩

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