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    Quantified equality constraints

    Bodirsky, M. and Chen, Hubie (2007) Quantified equality constraints. In: UNSPECIFIED (ed.) LICS 2007: 22nd IEEE Symposium on Logic in Computer Science. IEEE Computer Society, pp. 203-212. ISBN 0769529089.

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    Abstract

    An equality template (also equality constraint language) is a relational structure with infinite universe whose relations can be defined by boolean combinations of equalities. We prove a complete complexity classification for quantified constraint satisfaction problems (QCSPs) over equality templates: these problems are in L (decidable in logarithmic space), NP-complete, or PSPACE-complete. To establish our classification theorem we combine methods from universal algebra with concepts from model theory.

    Metadata

    Item Type: Book Section
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences
    Depositing User: Sarah Hall
    Date Deposited: 02 Mar 2021 19:24
    Last Modified: 09 Aug 2023 12:50
    URI: https://eprints.bbk.ac.uk/id/eprint/43275

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