Nov 28 – 29, 2022
Le Bois-Marie
Europe/Paris timezone

Strange Gradings and Elimination of Generators

Nov 28, 2022, 11:50 AM
Centre de conférences Marilyn et James Simons (Le Bois-Marie)

Centre de conférences Marilyn et James Simons

Le Bois-Marie

35, route de Chartres 91440 Bures-sur-Yvette


Prof. Gérard H.E. DUCHAMP (LIPN, Université Paris Nord)


Elimination of generators (commutative or noncommutative) is linked to many combinatorial theories (Bisection and codes, Semidirect products of presented groups and Lie algebras, Strange gradings over semigroups, Lazard elimination). We will describe unifying (categorical) links between some of these theories and give general results allowing us to get semidirect decompositions at first sight.
Joint work with Paul-Andre Melliès and Vu Nguyen Dinh.

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