Hypersequent Calculi for S5: The Methods of Cut Elimination

• Autorzy: Bednarska Kaja , Indrzejczak Andrzej
• Języki publikacji: EN

Abstrakty

EN

S5 is one of the most important modal logic with nice syntactic, semantic and algebraic properties. In spite of that, a successful (i.e. cut-free) formalization of S5 on the ground of standard sequent calculus (SC) was problematic and led to the invention of numerous nonstandard, generalized forms of SC. One of the most interesting framework which was very often used for this aim is that of hypersequent calculi (HC). The paper is a survey of HC for S5 proposed by Pottinger, Avron, Restall, Poggiolesi, Lahav and Kurokawa. We are particularly interested in examining different methods which were used for proving the eliminability/admissibility of cut in these systems and present our own variant of a system which admits relatively simple proof of cut elimination.

Słowa kluczowe

EN

cut elimination; modal logic; hypersequent calculi; proof theory

• Wydawca: Uniwersytet Mikołaja Kopernika (Nicolaus Copernicus University in Toruń)
• Czasopismo: Logic and Logical Philosophy
• Rocznik: 2015
• Tom: 24
• Numer: 3
• Strony: 277–311

Daty

wydano

2015-09-01

online

2015-08-25

Twórcy

autor

Bednarska Kaja

• Department of Logic, University of Łódź, Kopcińskiego 16/18, 90–232 Łódź, Poland,

autor

Indrzejczak Andrzej

• Department of Logic, University of Łódź, Kopcińskiego 16/18, 90–232 Łódź, Poland,

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Identyfikatory

DOI

10.12775/LLP.2015.018