Geodesic
Homology Groups of a Pipeline Petri Net
Modelirovanie i analiz informacionnyh sistem, Tome 20 (2013) no. 2, pp. 92-103.

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Petri net is said to be elementary if every place can contain no more than one token. In this paper, it is studied topological properties of the elementary Petri net for a pipeline consisting of n functional devices. If the work of the functional devices is considered continuous, we can come to some topological space of “intermediate” states. In the paper, it is calculated the homology groups of this topological space. By induction on n, using the Addition Sequence for homology groups of semicubical sets, it is proved that in dimension 0 and 1 the integer homology groups of these nets are equal to the group of integers, and in the remaining dimensions are zero. Directed homology groups are studied. A connection of these groups with deadlocks and newsletters is found. This helps to prove that all directed homology groups of the pipeline elementary Petri nets are zeroth.
Keywords: trace monoid, elementary Petri net, pipeline, semicubical set, homology of small categories.
Mots-clés : asynchronous transition system 
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A. A. Husainov; E. S. Bushmeleva; T. A. Trishina. Homology Groups of a Pipeline Petri Net. Modelirovanie i analiz informacionnyh sistem, Tome 20 (2013) no. 2, pp. 92-103. http://geodesic.mathdoc.fr/item/MAIS_2013_20_2_a6/

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