LIPIcs-ICALP-2021-130.pdf (810.42 kB)
The theory of concatenation over finite models
conference contributionposted on 2021-07-05, 14:58 authored by Dominik FreydenbergerDominik Freydenberger, Liat Peterfreund
We propose FC, a new logic on words that combines finite model theory with the theory of concatenation – a first-order logic that is based on word equations. Like the theory of concatenation, FC is built around word equations; in contrast to it, its semantics are defined to only allow finite models, by limiting the universe to a word and all its factors. As a consequence of this, FC has many of the desirable properties of FO on finite models, while being far more expressive than FO[<]. Most noteworthy among these desirable properties are sufficient criteria for efficient model checking, and capturing various complexity classes by adding operators for transitive closures or fixed points. Not only does FC allow us to obtain new insights and techniques for expressive power and efficient evaluation of document spanners, but it also provides a general framework for logic on words that also has potential applications in other areas.
Foundations of the Finite Model Theory of Concatenation
Engineering and Physical Sciences Research CouncilFind out more...
Fondation des Sciences Mathématiques de Paris (FSMP)
- Computer Science
Published inLeibniz International Proceedings in Informatics
Source48th International Colloquium on Automata, Languages, and Programming (ICALP 2021)
PublisherSchloss Dagstuhl - Leibniz-Zentrum für Informatik
- VoR (Version of Record)
Rights holder© The Authors
Publisher statementThis is an Open Access Article. It is published by Schloss Dagstuhl - Leibniz-Zentrum für Informatik under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by/4.0/