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Parameterized Bounded-Depth Frege Is not Optimal

Published: 01 September 2012 Publication History

Abstract

A general framework for parameterized proof complexity was introduced by Dantchev et al. [2007]. There, the authors show important results on tree-like Parameterized Resolution---a parameterized version of classical Resolution---and their gap complexity theorem implies lower bounds for that system.
The main result of this article significantly improves upon this by showing optimal lower bounds for a parameterized version of bounded-depth Frege. More precisely, we prove that the pigeonhole principle requires proofs of size nΩ(k) in parameterized bounded-depth Frege, and, as a special case, in dag-like Parameterized Resolution. This answers an open question posed in Dantchev et al. [2007]. In the opposite direction, we interpret a well-known technique for FPT algorithms as a DPLL procedure for Parameterized Resolution. Its generalization leads to a proof search algorithm for Parameterized Resolution that in particular shows that tree-like Parameterized Resolution allows short refutations of all parameterized contradictions given as bounded-width CNFs.

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Published In

cover image ACM Transactions on Computation Theory
ACM Transactions on Computation Theory  Volume 4, Issue 3
September 2012
46 pages
ISSN:1942-3454
EISSN:1942-3462
DOI:10.1145/2355580
Issue’s Table of Contents
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

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Publication History

Published: 01 September 2012
Accepted: 01 July 2012
Revised: 01 March 2012
Received: 01 September 2011
Published in TOCT Volume 4, Issue 3

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Author Tags

  1. Proof complexity
  2. Resolution
  3. bounded-depth Frege
  4. parameterized complexity

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  • (2021)Clique Is Hard on Average for Regular ResolutionJournal of the ACM10.1145/344935268:4(1-26)Online publication date: 30-Jun-2021
  • (2021)Proof Complexity of Modal ResolutionJournal of Automated Reasoning10.1007/s10817-021-09609-9Online publication date: 13-Oct-2021
  • (2019)Resolution and the binary encoding of combinatorial principlesProceedings of the 34th Computational Complexity Conference10.4230/LIPIcs.CCC.2019.6(1-25)Online publication date: 17-Jul-2019
  • (2018)Clique is hard on average for regular resolutionProceedings of the 50th Annual ACM SIGACT Symposium on Theory of Computing10.1145/3188745.3188856(866-877)Online publication date: 20-Jun-2018
  • (2018)Cliques enumeration and tree-like resolution proofsInformation Processing Letters10.1016/j.ipl.2018.03.001135(62-67)Online publication date: Jul-2018
  • (2017)The complexity of proving that a graph is RamseyCombinatorica10.1007/s00493-015-3193-937:2(253-268)Online publication date: 1-Apr-2017
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