Computation Process
A computation works from an initial starting state towards an end state through a number of discrete steps. Each step involves iterating through all membranes in the P system and the application of rules, which occurs in both a maximally parallel and non-deterministic manner.
Working through step-by-step, a computation halts when no further evolution can take place (i.e. when no rules are able to be applied). At this point whatever objects have been passed to the environment, or into a designated 'result' membrane, are counted as the result of the computation.
Read more about this topic: P System
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