Journal of Symbolic Logic

Intuitionistic logic freed of all metarules

Giovanna Corsi and Gabriele Tassi

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In this paper we present two calculi for intuitionistic logic. The first one, IG, is characterized by the fact that every proof-search terminates and termination is reached without jeopardizing the subformula property. As to the second one, SIC, proof-search terminates, the subformula property is preserved and moreover proof-search is performed without any recourse to metarules, in particular there is no need to back-track. As a consequence, proof-search in the calculus SIC is accomplished by a single tree as in classical logic.

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J. Symbolic Logic Volume 72, Issue 4 (2007), 1204-1218.

First available in Project Euclid: 18 February 2008

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Corsi, Giovanna; Tassi, Gabriele. Intuitionistic logic freed of all metarules. J. Symbolic Logic 72 (2007), no. 4, 1204--1218. doi:10.2178/jsl/1203350782.

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