A CUT-FREE SIMPLE SEQUENT CALCULUS FOR MODAL LOGIC S5

In this paper, we present a simple sequent calculus for the modal propositional logic S5. We prove that this sequent calculus is theoremwise equivalent to the Hilbert-style system S5, that it is contraction-free and cut-free, and finally that it is decidable. All results are proved in a purely synta...

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Veröffentlicht in:	The review of symbolic logic 2008-06, Vol.1 (1), p.3-15
1. Verfasser:	POGGIOLESI, FRANCESCA
Format:	Artikel
Sprache:	eng
Schlagworte:	History, Philosophy and Sociology of Sciences Humanities and Social Sciences
Online-Zugang:	Volltext
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