2022/04/11 by Estanislao Herscovich, Ziling Li, Herscovich, Estanislao +1
Mathematics · #16E40 #16S37 #18G10 #Advanced Topics in Algebra #Algebraic structures and combinatorial models #FOS: Mathematics #Homotopy and Cohomology in Algebraic Topology #K-Theory and Homology (math.KT) #Quantum Algebra (math.QA)
paper · pdf · doi:10.48550/arxiv.2204.04975
openalex publication_date 2022/04/11 · openalex created_date 2022/04/15 · openalex updated_date 2026/07/28
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 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\bullet(A) is not induced by any Batalin-Vilkovisky generator.