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Uniform Proof Complexity

机译:统一的证明复杂性

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摘要

We define the notion of the uniform reduct of a propositional proof system as the set of those bounded formulas in the language of Peano Arithmetic which have polynomial size proofs under the Paris-Wilkie-translation. With respect to the arithmetic complexity of uniform reducts, we show that uniform reducts are Π_1~0-hard and obviously in ∑_2~0. We also show under certain regularity conditions that each uniform reduct is closed under bounded generalisation; that in the case the language includes a symbol for exponentiation, a uniform reduct is closed under modus ponens if and only if it already contains all true bounded formulas; and that each uniform reduct contains all true Π_1~b (α)-formulas.
机译:我们将命题证明系统的统一约简的概念定义为Peano算术语言中具有巴黎-威尔基翻译的多项式大小证明的那些有界公式的集合。关于均匀约简的算术复杂度,我们表明均匀约简是_1_1〜0-hard,显然在∑_2〜0中。我们还证明,在一定的规律性条件下,每个统一归约都在有界概括下是封闭的。在该语言包括求幂符号的情况下,当且仅当它已经包含所有真实的有界公式时,才会在惯用ponens下关闭统一归约;并且每个均匀约简都包含所有真实的Π_1〜b(α)公式。

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