On the Applicability of Post's Lattice

Michael Thomas

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arXiv · 1007.2924

On the Applicability of Post's Lattice

Michael Thomas

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Abstract

For decision problems P defined over Boolean circuits from a restricted set of gates, we have that P(B) AC0 many-one reduces to P(B') for all finite sets B and B' of gates such that all gates from B can be computed by circuits over gates from B'. In this paper, we show that a weaker version of this statement holds for decision problems defined over Boolean formulae, namely that P(B) NC2 many-one reduces to P(B' union {and,or}) and that P(B) NC2 many-one reduces to P(B' union {false,true}), for all finite sets B and B' of Boolean functions such that all f in B can be defined in B'.

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Michael Thomas. 2010-07-17. On the Applicability of Post's Lattice. https://arxiv.org/abs/1007.2924

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