Notable Problems in P
P is known to contain many natural problems, including the decision versions of linear programming, calculating the greatest common divisor, and finding a maximum matching. In 2002, it was shown that the problem of determining if a number is prime is in P. The related class of function problems is FP.
Several natural problems are complete for P, including st-connectivity (or reachability) on alternating graphs. The article on P-complete problems lists further relevant problems in P.
Read more about this topic: P (complexity)
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