2026-07-22T15:55:36Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:3903 2024-03-06T10:25:54Z ddc:004 open_access

Algebraic and Combinatorial Methods in Computational Complexity (Dagstuhl Seminar 12421) Agrawal, Manindra Thierauf, Thomas Umans, Christopher Computational Complexity lower bounds approximazation pseudo-randomness derandomization circuits At its core, much of Computational Complexity is concerned with combinatorial objects and structures. But it has often proven true that the best way to prove things about these combinatorial objects is by establishing a connection (perhaps approximate) to a more well-behaved algebraic setting. Indeed, many of the deepest and most powerful results in Computational Complexity rely on algebraic proof techniques. The PCP characterization of NP and the Agrawal-Kayal-Saxena polynomial-time primality test are two prominent examples. Recently, there have been some works going in the opposite direction, giving alternative combinatorial proofs for results that were originally proved algebraically. These alternative proofs can yield important improvements because they are closer to the underlying problems and avoid the losses in passing to the algebraic setting. A prominent example is Dinur's proof of the PCP Theorem via gap amplification which yielded short PCPs with only a polylogarithmic length blowup (which had been the focus of significant research effort up to that point). We see here (and in a number of recent works) an exciting interplay between algebraic and combinatorial techniques. This seminar aims to capitalize on recent progress and bring together researchers who are using a diverse array of algebraic and combinatorial methods in a variety of settings. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Manindra Agrawal and Thomas Thierauf and Christopher Umans 2013 Is Part Of Dagstuhl Reports, Volume 2, Issue 10 (2013) Article Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/DagRep.2.10.60 urn:nbn:de:0030-drops-39034 https://drops.dagstuhl.de/entities/document/10.4230/DagRep.2.10.60 eng https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode