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arXiv 1202.1195math.LO
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谓词直觉公式的模型论刻画

Model-theoretic characterization of predicate intuitionistic formulas

Grigory K. Olkhovikov

摘要:

在[Olkhovikov,2011]中引入的asimulation和k-asimulation的概念被扩展到谓词逻辑的层次上。然后我们证明了一个一阶公式等价于一个直觉谓词公式的标准翻译当且仅当它对k-asimitations是不变的,然后证明了一个一阶公式等价于一个直觉谓词公式的标准翻译当且仅当它对asimitations是不变的.最后,证明了一类直觉模型(常论域直觉模型)上的一阶公式等价于直觉谓词公式的标准翻译当且仅当它对于直觉模型(常论域直觉模型)之间的模拟是不变的.

英文摘要:

Notions of asimulation and k-asimulation introduced in [Olkhovikov, 2011] are extended onto the level of predicate logic. We then prove that a first-order formula is equivalent to a standard translation of an intuitionistic predicate formula iff it is invariant with respect to k-asimulations for some k, and then that a first-order formula is equivalent to a standard translation of an intuitionistic predicate formula iff it is invariant with respect to asimulations. Finally, it is proved that a first-order formula is equivalent to a standard translation of an intuitionistic predicate formula over a class of intuitionistic models (intuitionistic models with constant domain) iff it is invariant with respect to asimulations between intuitionistic models (intuitionistic models with constant domain).

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