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Mu and mu tilde: two useful combinators

Title: Mu and mu tilde:  two useful combinators
Speaker: Pierre-Louis Curien (CNRS and Univ. Paris Diderot)
Time: 10:30, August 30th, 2013
Venue: Lecture Room, 3rd Floor, Building #5, State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences
Abstract:
In my work with Hugo Herbelin, and then with my student Guillaume Munch, we explored term syntaxes for sequent calculus (for classical logic) I recently found that the same style of syntax allows for a neat description of the wiring structures underlying operads, cooperads…, which are used  in contemporary algebra to describe various types of algebras and coalgebras. Under this new light, the fundamental non-determinism of classical logic appears to match the notion of duplicial algebra, proposed by the late mathematician Jean-Louis Loday among a wealth of new algebraic structures which he unveiled over the last 20 years or so.Information about Pierre-Louis Curien is available at http://www.pps.univ-paris-diderot.fr/~curien/.