Understanding Gentzen and Frege Systems for QBF
Understanding Gentzen and Frege Systems for QBF
复制标题
了解 QBF 的 Gentzen 和 Frege 系统
DOI:
10.1145/2933575.2933597
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
Beyersdorff O
中科院分区:
文献类型:
--
作者:
Beyersdorff O
Recently Beyersdorff, Bonacina, and Chew [10] introduced a natural class of Frege systems for quantified Boolean formulas (QBF) and showed strong lower bounds for restricted versions of these systems. Here we provide a comprehensive analysis of the new extended Frege system from [10], denoted EF + ∀red, which is a natural extension of classical extended Frege EF.Our main results are the following: Firstly, we prove that the standard Gentzen-style system G*1 p-simulates EF + ∀red and that G*1 is strictly stronger under standard complexity-theoretic hardness assumptions.Secondly, we show a correspondence of EF + ∀red to bounded arithmetic: EF + ∀red can be seen as the non-uniform propositional version of intuitionistic S12. Specifically, intuitionistic S12 proofs of arbitrary statements in prenex form translate to polynomial-size EF + ∀red proofs, and EF + ∀red is in a sense the weakest system with this property.Finally, we show that unconditional lower bounds for EF + ∀red would imply either a major breakthrough in circuit complexity or in classical proof complexity, and in fact the converse implications hold as well. Therefore, the system EF + ∀red naturally unites the central problems from circuit and proof complexity.Technically, our results rest on a formalised strategy extraction theorem for EF + ∀red akin to witnessing in intuitionistic S12 and a normal form for EF + ∀red proofs.
登录
查看更多内容
DOI:
--
发表时间:
1986
期刊:
Symposium on Computation Theory
影响因子:
--
作者:
S. Buss
通讯作者:
S. Buss
DOI:
10.1002/malq.19900360106
发表时间:
1990
期刊:
Math. Log. Q.
影响因子:
--
作者:
J. Krajícek;P. Pudlák
通讯作者:
P. Pudlák
影响因子:
0.3
作者:
Emil Jeřábek;Phuong Nguyen
通讯作者:
Phuong Nguyen
DOI:
--
发表时间:
2012
期刊:
International Conference on Theory and Applications of Satisfiability Testing
影响因子:
--
作者:
Uwe Egly
通讯作者:
Uwe Egly
影响因子:
0.5
作者:
Beyersdorff, Olaf;Chew, Leroy;Shukla, Anil
通讯作者:
Shukla, Anil