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Strange gradings and elimination of generators

By Gérard Duchamp

Appears in collection : Combinatorics and Arithmetic for Physics : Special Days

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

Information about the video

  • Date of recording 11/28/22
  • Date of publication 11/30/22
  • Institution IHES
  • Language English
  • Audience Researchers
  • Format MP4

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