Classical BI: Its Semantics and Proof Theory

We present Classical BI (CBI), a new addition to the family of bunched logics which originates in O'Hearn and Pym's logic of bunched implications BI. CBI differs from existing bunched logics in that its multiplicative connectives behave classically rather than intuitionistically (including...

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Main Authors: James Brotherston, Cristiano Calcagno
Format: Article
Language:English
Published: Logical Methods in Computer Science e.V. 2010-07-01
Series:Logical Methods in Computer Science
Subjects:
Online Access:https://lmcs.episciences.org/1014/pdf
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author James Brotherston
Cristiano Calcagno
author_facet James Brotherston
Cristiano Calcagno
author_sort James Brotherston
collection DOAJ
description We present Classical BI (CBI), a new addition to the family of bunched logics which originates in O'Hearn and Pym's logic of bunched implications BI. CBI differs from existing bunched logics in that its multiplicative connectives behave classically rather than intuitionistically (including in particular a multiplicative version of classical negation). At the semantic level, CBI-formulas have the normal bunched logic reading as declarative statements about resources, but its resource models necessarily feature more structure than those for other bunched logics; principally, they satisfy the requirement that every resource has a unique dual. At the proof-theoretic level, a very natural formalism for CBI is provided by a display calculus \`a la Belnap, which can be seen as a generalisation of the bunched sequent calculus for BI. In this paper we formulate the aforementioned model theory and proof theory for CBI, and prove some fundamental results about the logic, most notably completeness of the proof theory with respect to the semantics.
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spelling doaj.art-13ccea08a6244d5c98bc8a7a6fd139282024-03-08T09:12:33ZengLogical Methods in Computer Science e.V.Logical Methods in Computer Science1860-59742010-07-01Volume 6, Issue 310.2168/LMCS-6(3:3)20101014Classical BI: Its Semantics and Proof TheoryJames BrotherstonCristiano CalcagnoWe present Classical BI (CBI), a new addition to the family of bunched logics which originates in O'Hearn and Pym's logic of bunched implications BI. CBI differs from existing bunched logics in that its multiplicative connectives behave classically rather than intuitionistically (including in particular a multiplicative version of classical negation). At the semantic level, CBI-formulas have the normal bunched logic reading as declarative statements about resources, but its resource models necessarily feature more structure than those for other bunched logics; principally, they satisfy the requirement that every resource has a unique dual. At the proof-theoretic level, a very natural formalism for CBI is provided by a display calculus \`a la Belnap, which can be seen as a generalisation of the bunched sequent calculus for BI. In this paper we formulate the aforementioned model theory and proof theory for CBI, and prove some fundamental results about the logic, most notably completeness of the proof theory with respect to the semantics.https://lmcs.episciences.org/1014/pdfcomputer science - logic in computer sciencef.4.1
spellingShingle James Brotherston
Cristiano Calcagno
Classical BI: Its Semantics and Proof Theory
Logical Methods in Computer Science
computer science - logic in computer science
f.4.1
title Classical BI: Its Semantics and Proof Theory
title_full Classical BI: Its Semantics and Proof Theory
title_fullStr Classical BI: Its Semantics and Proof Theory
title_full_unstemmed Classical BI: Its Semantics and Proof Theory
title_short Classical BI: Its Semantics and Proof Theory
title_sort classical bi its semantics and proof theory
topic computer science - logic in computer science
f.4.1
url https://lmcs.episciences.org/1014/pdf
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