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Relational models for the Lambek calculus with intersection and unit

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Authors : Kuznetsov, Stepan (Author of the conference)
CIRM (Publisher )

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Abstract : We consider the Lambek calculus extended with intersection (meet) operation. For its variant which does not allow empty antecedents, Andreka and Mikulas (1994) prove strong completeness w.r.t. relational models (R-models). Without the antecedent non-emptiness restriction, however, only weak completeness w.r.t. R-models (so-called square ones) holds (Mikulas 2015). Our goals are as follows. First, we extend the calculus with the unit constant, introduce a class of non-standard R-models for it, and prove completeness. This gives a simpler proof of Mikulas' result. Second, we prove that strong completeness does not hold. Third, we extend our weak completeness proof to the infinitary setting, to so-called iterative divisions (Kleene star under division).

Keywords : Lambek calculus; relational semantics; completeness

MSC Codes :
03B47 - Substructural logics
08A02 - Relational systems, laws of composition

Additional resources :
https://www.cirm-math.fr/RepOrga/2398/Slides/Kuznetsov.pdf

    Information on the Video

    Film maker : Recanzone, Luca
    Language : English
    Available date : 26/11/2021
    Conference Date : 05/11/2021
    Subseries : Research talks
    arXiv category : Logic ; Logic in Computer Science
    Mathematical Area(s) : Computer Science ; Logic and Foundations
    Format : MP4 (.mp4) - HD
    Video Time : 00:29:45
    Targeted Audience : Researchers
    Download : https://videos.cirm-math.fr/2021-11-5_Kuznetsov.mp4

Information on the Event

Event Title : 19th International Conference on Relational and Algebraic Methods in Computer Science / 19ème Conférence internationale de méthodes relationnelles et algébriques en informatique
Event Organizers : Fahrenberg, Uli ; Gehrke, Mai ; Santocanale, Luigi ; Winter, Michael
Dates : 02/11/2021 - 06/11/2021
Event Year : 2021
Event URL : https://conferences.cirm-math.fr/2398.html

Citation Data

DOI : 10.24350/CIRM.V.19828603
Cite this video as: Kuznetsov, Stepan (2021). Relational models for the Lambek calculus with intersection and unit. CIRM. Audiovisual resource. doi:10.24350/CIRM.V.19828603
URI : http://dx.doi.org/10.24350/CIRM.V.19828603

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