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research article

Separations in Proof Complexity and TFNP

Goos, Mika  
•
Hollender, Alexandros
•
Jain, Siddhartha
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August 1, 2024
Journal Of The ACM

It is well-known that Resolution proofs can be efficiently simulated by Sherali-Adams (SA) proofs. We show, however, that any such simulation needs to exploit huge coefficients: Resolution cannot be efficiently simulated by SA when the coefficients are written in unary. We also show that Reversible Resolution (a variant of MaxSAT Resolution) cannot be efficiently simulated by Nullstellensatz (NS). These results have consequences for total NP search problems. First, we characterise the classes PPADS, PPAD, SOPL by unary-SA, unary-NS, and Reversible Resolution, respectively. Second, we show that, relative to an oracle, PLS PPP, SOPL PPA, and EOPL UEOPL. In particular, together with prior work, this gives a complete picture of the black-box relationships between all classical TFNP classes introduced in the 1990s.

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Type
research article
DOI
10.1145/3663758
Web of Science ID

WOS:001314774300004

Author(s)
Goos, Mika  

École Polytechnique Fédérale de Lausanne

Hollender, Alexandros

University of Oxford

Jain, Siddhartha

University of Texas System

Maystre, Gilbert  

École Polytechnique Fédérale de Lausanne

Pires, William

Columbia University

Robere, Robert

McGill University

Tao, Ran

Carnegie Mellon University

Date Issued

2024-08-01

Publisher

ASSOC COMPUTING MACHINERY

Published in
Journal Of The ACM
Volume

71

Issue

4

Article Number

26

Subjects

Sherali-adams

•

proof complexity

•

total search problems

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
THL5  
FunderFunding(s)Grant NumberGrant URL

Swiss State Secretariat for Education, Research and Innovation (SERI)

MB22.00026

Quantum Systems Accelerator through DOE

Natural Sciences and Engineering Research Council of Canada (NSERC)

Available on Infoscience
February 1, 2025
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/246361
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