Gerstenhaber structure on Hochschild cohomology of the Fomin–Kirillov algebra on 3 generators - Université Grenoble Alpes
Article Dans Une Revue Documenta Mathematica Année : 2022

Gerstenhaber structure on Hochschild cohomology of the Fomin–Kirillov algebra on 3 generators

Estanislao Herscovich
  • Fonction : Auteur

Résumé

The goal of this article is to compute the Gerstenhaber bracket of the Hochschild cohomology of the Fomin–Kirillov algebra on three generators over a field of characteristic different from 2 and 3. This is in part based on a general method we introduce to easily compute the Gerstenhaber bracket between elements of HH0(A) and elements of HHn(A) for n∈N0, the method by M. Suárez-Álvarez [J. Pure Appl. Algebra 221, No. 8, 1981–1998 (2017; Zbl 1392.16009)] to calculate the Gerstenhaber bracket between elements of HH1(A) and elements of HHn (A) for any n∈N0, as well as an elementary result that allows to compute the remaining brackets from the previous ones. We also show that the Gerstenhaber bracket of HH (A) is not induced by any Batalin–Vilkovisky generator.

Dates et versions

hal-04776897 , version 1 (12-11-2024)

Identifiants

Citer

Estanislao Herscovich, Ziling Li. Gerstenhaber structure on Hochschild cohomology of the Fomin–Kirillov algebra on 3 generators. Documenta Mathematica, 2022, 27, pp.1773-1804. ⟨10.4171/DM/X18⟩. ⟨hal-04776897⟩

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