
doi: 10.1137/0208035
A characterization of PSPACE in terms of the regular sets and certain algebraic closure operations is developed. It is shown that NP = PSPACE if and only if NP is closed under a form of the transitive closure operation.
Complexity of computation (including implicit computational complexity), transitive closure, homomorphic replication, intersection, Analysis of algorithms and problem complexity, polynomial space, regular sets
Complexity of computation (including implicit computational complexity), transitive closure, homomorphic replication, intersection, Analysis of algorithms and problem complexity, polynomial space, regular sets
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