English

Tensor-Hochschild complex

Algebraic Geometry 2026-04-08 v2 Category Theory Quantum Algebra

Abstract

Let (C,)(\mathcal{C}, \otimes) be a monoidal dg-category. We construct a complex controlling the deformation of the monoidal structure on C\mathcal{C} together with the deformation of the underlying dg-category itself. We show that in the case of a semisimple category C\mathcal{C} 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 AA-modules over a commutative algebra AA we obtain a complex computing operadic E2E_2-cohomology of AA. 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.

Keywords

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

R2 v1 2026-07-01T02:25:37.308Z