On the Interval of Boolean Strong Partial Clones Containing Only Projections as Total Operations

Miguel Couceiro 1 Lucien Haddad 2 Victor Lagerkvist 3 Biman Roy 4
1 ORPAILLEUR - Knowledge representation, reasonning
Inria Nancy - Grand Est, LORIA - NLPKD - Department of Natural Language Processing & Knowledge Discovery
2 RMCC - Royal Military College of Canada
3 Institut für Algebra [Dresden]
4 Linköpings universitet
Abstract : A strong partial clone is a set of partial operations closed under composition and containing all partial projections. Let X be the set of all Boolean strong partial clones whose total operations are the projections. This set is of practical interest since it induces a partial order on the complexity of NP-complete constraint satisfaction problems. In this paper we study X from the algebraic point of view, and prove that there exists two intervals in X , corresponding to natural constraint satisfaction problems, such that one is at least countably infinite and the other has the cardinality of the continuum.
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Communication dans un congrès
47th IEEE International Symposium on Multiple-Valued Logic (ISMVL), May 2017, Novi Sad, Serbia. IEEE Computer Society, 2017
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Soumis le : samedi 8 avril 2017 - 01:17:27
Dernière modification le : jeudi 5 avril 2018 - 09:56:01
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Miguel Couceiro, Lucien Haddad, Victor Lagerkvist, Biman Roy. On the Interval of Boolean Strong Partial Clones Containing Only Projections as Total Operations. 47th IEEE International Symposium on Multiple-Valued Logic (ISMVL), May 2017, Novi Sad, Serbia. IEEE Computer Society, 2017. 〈hal-01504012〉

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