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arXiv 0811.0959cs.CCcs.LO
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命题蕴涵的复杂性

The Complexity of Propositional Implication

Olaf Beyersdorff, Arne Meier, Michael Thomas, Heribert Vollmer

摘要:

一组公式G是否蕴涵一个公式f的问题是基本的。本文研究了由系统限制的布尔联结词集合构造的命题公式的上述蕴涵问题的复杂性。本文给出了Post格意义下的所有布尔函数集的复杂性分类,并证明了蕴涵问题只有在连接词可用常数{false,true}和{and,or,xor}中的一个定义时才有效可解.在所有其他情况下,该问题仍然是coNP完全的。我们还考虑了G对单例的限制。

英文摘要:

The question whether a set of formulae G implies a formula f is fundamental. The present paper studies the complexity of the above implication problem for propositional formulae that are built from a systematically restricted set of Boolean connectives. We give a complete complexity classification for all sets of Boolean functions in the meaning of Post's lattice and show that the implication problem is efficentily solvable only if the connectives are definable using the constants {false,true} and only one of {and,or,xor}. The problem remains coNP-complete in all other cases. We also consider the restriction of G to singletons.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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