A game for a neutral approach to provability in MALL

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• Olivier Delande, Laboratoire d'Informatique (LIX), Ecole Polytechnique
• Friday 20 February 2009, 14:30-15:30
• Room FW11, Computer Laboratory, William Gates Building.

If you have a question about this talk, please contact Sam Staton.

Game semantics for logic are usually asymmetric in the sense that the winning strategies of the player in an arena A can be seen as the proofs of A, but those of the opponent do not correspond to any proof—they are mere witnesses that A is not provable. In contrast, I will present an original game for the multiplicative and additive fragment of linear logic (MALL), in which the winning strategies of the opponent correspond to proofs of the negation of A. That is, plays can be seen as the simultaneous development of two orthogonal derivations.

NOTE THAT WE ARE STARTING 30 MINUTES LATER THAN USUAL

This talk is part of the Logic and Semantics Seminar (Computer Laboratory) series.

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