Event

Yvain Bruned (Université de Lorraine): Post-Lie algebras in Regularity Structures

Ort: MPI für Mathematik in den Naturwissenschaften Leipzig, Videobroadcast

Vortrag in der Reihe: Arbeitsgemeinschaft ANGEWANDTE ANALYSIS In this talk, we will present a new construction of the deformed Butcher-Connes-Kreimer Hopf algebra coming from the theory of Regularity Structures as the universal envelope of a post-Lie algebra. It can be performed using either of the two combinatorial structures that have been proposed in the context of singular SPDEs: decorated trees and multi-indices. Our construction is inspired from multi-indices where the Hopf algebra was obtained as the universal envelope of a Lie algebra. We show that this Lie algebra comes from an underlying post-Lie structure.

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Beginn: Nov. 30, 2022, 3 p.m.

Ende: Nov. 30, 2022, 4:30 p.m.