Tensor-Hochschild complex
Abstract
Let be a monoidal dg-category. We construct a complex controlling the deformation of the monoidal structure on together with the deformation of the underlying dg-category itself. We show that in the case of a semisimple category it reduces to the Davydov-Yetter complex. Furthermore, we study this complex in several special cases, in particular, in the case of the category of -modules over a commutative algebra we obtain a complex computing operadic -cohomology of . And in the case of the category of representations of an associative bialgebra we recover the Gerstenhaber-Schack complex. In the latter case our construction can be considered as a generalization of the Gerstenhaber-Schack complex to quasi-bialgebras.
Cite
@article{arxiv.2505.14545,
title = {Tensor-Hochschild complex},
author = {Slava Pimenov and Angel Toledo},
journal= {arXiv preprint arXiv:2505.14545},
year = {2026}
}
Comments
34 pages, Apr 07 2026 update: added discussion about Lie-infinity algebras in the intro, and BIMSA acknowledgement