BV structure on the Hochschild cohomology of twisted tensor products

Fuente: arXiv
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Main Author: Antrobus, Matthew
Format: Preprint
Published: 2025
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author Antrobus, Matthew
author_facet Antrobus, Matthew
contents Given two Frobenius algebras, we describe the BV operator on the Hochschild cohomology of their tensor product twisted by a bicharacter in terms of twisted BV operators on summands of the Hochschild cohomology described by Briggs and Witherspoon. This specialises to the case of non-twisted tensor products, and in doing so generalises a result of Le and Zhou. This allows us to simplify calculations in the literature significantly.
format Preprint
id arxiv_https___arxiv_org_abs_2506_23911
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle BV structure on the Hochschild cohomology of twisted tensor products
Antrobus, Matthew
Rings and Algebras
K-Theory and Homology
Given two Frobenius algebras, we describe the BV operator on the Hochschild cohomology of their tensor product twisted by a bicharacter in terms of twisted BV operators on summands of the Hochschild cohomology described by Briggs and Witherspoon. This specialises to the case of non-twisted tensor products, and in doing so generalises a result of Le and Zhou. This allows us to simplify calculations in the literature significantly.
title BV structure on the Hochschild cohomology of twisted tensor products
topic Rings and Algebras
K-Theory and Homology
url https://arxiv.org/abs/2506.23911