Bulletin of the Section of Logic 20 (1):23-29 (1991)

Authors
Valentin Goranko
Stockholm University
Abstract
This note considers deductive systems for the operator a of unprovability in some particular propositional normal modal logics. We give thus complete syntactic characterization of these logics in the sense of Lukasiewicz: for every formula  either `  or a  (but not both) is derivable. In particular, purely syntactic decision procedure is provided for the logics under considerations.
Keywords modal logic  unprovability  non-validities  syntactic decision procedure
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References found in this work BETA

An Essay in Classical Modal Logic.Krister Segerberg - 1971 - Uppsala, Filosofiska Föreningen Och Filosofiska Institutionen Vid Uppsala Universitet.
Modal Logic and Classical Logic.R. A. Bull - 1987 - Journal of Symbolic Logic 52 (2):557-558.
Aristotle's Syllogistic from the Standpoint of Modern Formal Logic.JAN LUKASIEWICZ - 1952 - Revue de Métaphysique et de Morale 57 (4):456-458.

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Citations of this work BETA

A Łukasiewicz-Style Refutation System for the Modal Logic S.Tomasz Skura - 1995 - Journal of Philosophical Logic 24 (6):573 - 582.
Rejection in Łukasiewicz's and Słupecki's Sense.Urszula Wybraniec-Skardowska - 2018 - In Urszula Wybraniec-Skardowska & Ángel Garrido (eds.), The Lvov-Warsaw School. Past and Present. Basel, Switzerland: pp. 575-597.

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