Journée-séminaire de combinatoire

(équipe CALIN du LIPN, université Paris-Nord, Villetaneuse)

Le 12 février 2016 à 11h00 en B107, Damien Pous nous parlera de : Hacking nondeterminism with induction and coinduction

Résumé : Finite automata are used in a wide range of verification problems. We introduce "bisimulation up to congruence" as a technique for proving language equivalence of non-deterministic finite automata. Exploiting this technique, we devise an optimisation of the classical algorithm by Hopcroft and Karp which, as we show, is exploiting a weaker "bisimulation up to equivalence" technique. The resulting algorithm can be exponentially faster than the recently introduced "antichain algorithms".

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