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LINGUISTIX&LOGIK, Tony Marmo's blog
Saturday, 4 September 2004

Topic: PARACONSISTENCY

Towards a Logic for Pragmatics. Assertions and Conjectures


by Gianluigi Bellin and Corrado Biasi

The logic for pragmatics extends classical logic in order to characterize the logical properties of the operators of illocutionary force such as that of assertion and obligation and of the pragmatic connectives which are given an intuitionistic interpretation. Here we consider the cases of assertions and conjectures : the assertion that a mathematical proposition _ is true is justified by the capacity to present an actual proof of _, while the conjecture that _ is true is justified by the absence of a refutation of _. We give sequent calculi of type G3i and G3i m inspired by Girard's LU , with subsystems characterizing intuitionistic reasoning and some forms of classical reasoning with such operators. Extending Godel, McKinsey, Tarski and Kripke's translations of intuitionistic logic into S4 , we show that our sequent calculi are sound and complete with respect to Kripke's semantics for S4 .

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See also
G. Bellin and Corrado Biasi.
Cut-Elimination for the logic of pragmatics
(This is work in progress, which summarizes dr Corrado Biasi's Tesi di Laurea. It substantially refines and develops the ideas and the direction of research presented at the IMLA-FLOC'02 conference.)


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Posted by Tony Marmo at 01:01 BST
Updated: Saturday, 4 September 2004 12:03 BST

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