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Definition: Petri Net


A diagram that models the behavior of a system. Developed by Carl Adam Petri in the early 1960s, the Petri Net symbols are "places" (circles) that represent system states and "transitions" (rectangles) that show actions, both connected by arrows known as "arcs."




Petri Net Symbols
Petri Nets are often used to show concurrency as in example #2.





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