The complexity of variable minimal formulas
The complexity of variable minimal formulas
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DOI:
10.1007/s11434-010-3127-2
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发表时间:
2010-06
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通讯作者:
Zhenyu Chen;Baowen Xu;Decheng Ding
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文献类型:
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作者:
Zhenyu Chen;Baowen Xu;Decheng Ding
Based on the common properties of logic formulas: equivalence and satisfiability, the concept of variable minimal formulas with property preservation is introduced. A formula is variable minimal if the resulting sub-formulas with any variable omission will change the given property. Some theoretical results of two classes: variable minimal equivalence (VME) and variable minimal satisfiability (VMS) are studied. We prove that VME is NP-complete, and VMS is in DPand coNP-hard.