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
影响因子:
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通讯作者:
Zhenyu Chen;Baowen Xu;Decheng Ding
Zhenyu Chen;Baowen Xu;Decheng Ding
中科院分区:
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文献类型:
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作者:
Zhenyu Chen;Baowen Xu;Decheng Ding

文献摘要

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基于逻辑公式的共同性质:等价性和可满足性,引入了保持性质的变量极小公式的概念。一个公式是变量最小的,如果结果子公式与任何变量省略将改变给定的属性。研究了变量极小等价(VME)和变量极小可满足(VMS)两类问题的一些理论结果。我们证明了VME是NP-完全的,VMS是DP和coNP-困难的。
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.