Abstract
This paper investigates the universality problem for Petri nets with inhibitor arcs. Four descriptional complexity parameters are considered: the number of places, transitions, inhibitor arcs, and the maximal degree of a transition. Each of these parameters is aimed to be minimized, a special attention being given to the number of places. Four constructions are presented having the following values of parameters (listed in the above order): (5, 877, 1022, 729), (5, 1024, 1316, 379), (4, 668, 778, 555), and (4, 780, 1002, 299). The decrease of the number of places with respect to previous work is primarily due to the consideration of non-deterministic computations in Petri nets. Using equivalencies between models our results can be translated to multiset rewriting with forbidding conditions, or to P systems with inhibitors.
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Ivanov, S., Pelz, E., Verlan, S. (2014). Small Universal Non-deterministic Petri Nets with Inhibitor Arcs. In: Jürgensen, H., Karhumäki, J., Okhotin, A. (eds) Descriptional Complexity of Formal Systems. DCFS 2014. Lecture Notes in Computer Science, vol 8614. Springer, Cham. https://doi.org/10.1007/978-3-319-09704-6_17
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DOI: https://doi.org/10.1007/978-3-319-09704-6_17
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