"Another proof GRT injects into KRV" (Rodrigo Navarro Betancourt, Dublin)

13.08.2024 15:00 – 16:00

The graded Grothendieck-Teichmüller group GRT is fundamentally present in several branches of mathematics. With regards to Lie theory, Alekseev and Torossian showed GRT injects into KRV, a graded group acting freely and transitively on solutions of the Kashiwara-Vergne conjecture. In this talk, we revisit this result and offer a different proof of the injection of GRT into KRV. We will present GRT as the group of automorphisms of the operad of parenthesized chord diagrams, and exploit a new characterization of KRV as the isotropy group of a fixed relative Lie cohomology class.

Lieu

Bâtiment: Conseil Général 7-9

Room 1-05

entrée libre