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FSTTCS
2008
Springer

The unfolding of general Petri nets

14 years 17 days ago
The unfolding of general Petri nets
The unfolding of (1-)safe Petri nets to occurrence nets is well understood. There is a universal characterization of the unfolding of a safe net which is part and parcel of a coreflection from the category of occurrence nets to the category of safe nets. The unfolding of general Petri nets, nets with multiplicities on arcs whose markings are multisets of places, does not possess a directly analogous universal characterization, essentially because there is an implicit symmetry in the multiplicities of general nets, and that symmetry is not expressed in their traditional occurrence net unfoldings. In the present paper, we show how to recover a universal characterization by placing a symmetry on the occurrence net unfoldings of general Petri nets. We show that this is part of a coreflection between enriched categories of general Petri nets with symmetry and occurrence nets with symmetry.
Jonathan Hayman, Glynn Winskel
Added 09 Nov 2010
Updated 09 Nov 2010
Type Conference
Year 2008
Where FSTTCS
Authors Jonathan Hayman, Glynn Winskel
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