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Tight Bounds on the Asymptotic Descriptive Complexity of Subgraph Isomorphism

Published: 29 March 2019 Publication History

Abstract

Let v(F) denote the number of vertices in a fixed connected pattern graph F. We show an infinite family of patterns F such that the existence of a subgraph isomorphic to F is expressible by a first-order sentence of quantifier depth 2/3 v(F) + 1, assuming that the host graph is sufficiently large and connected. However, this is impossible for any F using less than 2/3 v(F) - 2 first-order variables.

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  • (2020)First-order definitions of subgraph isomorphism through the adjacency and order relationsMoscow Journal of Combinatorics and Number Theory10.2140/moscow.2020.9.2939:3(293-302)Online publication date: 15-Oct-2020

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      cover image ACM Transactions on Computational Logic
      ACM Transactions on Computational Logic  Volume 20, Issue 2
      April 2019
      220 pages
      ISSN:1529-3785
      EISSN:1557-945X
      DOI:10.1145/3313982
      • Editor:
      • Orna Kupferman
      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 the author(s) 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

      New York, NY, United States

      Publication History

      Published: 29 March 2019
      Accepted: 01 January 2019
      Received: 01 July 2018
      Published in TOCL Volume 20, Issue 2

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      Author Tags

      1. The subgraph isomorphism problem
      2. and variable width
      3. descriptive and computational complexity
      4. first-order logic
      5. quantifier depth

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      • (2020)First-order definitions of subgraph isomorphism through the adjacency and order relationsMoscow Journal of Combinatorics and Number Theory10.2140/moscow.2020.9.2939:3(293-302)Online publication date: 15-Oct-2020

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