A note on Hopf Cyclic Cohomology in Non-symmetric Monoidal Categories

TL;DR

This paper extends Hopf cyclic cohomology to non-symmetric braided monoidal categories by relaxing symmetry restrictions, focusing on the braid map restrictions for Hopf algebra objects and coefficients, with examples in anyonic vector spaces.

Contribution

It generalizes Hopf cyclic cohomology to non-symmetric categories by only requiring braid map restrictions on key objects, broadening the framework's applicability.

Findings

Developed a framework for Hopf cyclic cohomology in non-symmetric categories.

Provided examples in anyonic vector spaces illustrating the theory.

Reduced symmetry constraints in the categorical setting.

Abstract

In our previous work, Hopf cyclic cohomology in braided monoidal categories, we extended the formalism of Hopf cyclic cohomology due to Connes and Moscovici and the more general case of Hopf cyclic cohomology with coefficients to the context of abelian braided monoidal categories. In this paper we go one step further in reducing the restriction of the ambient category being symmetric. We let the ambient category to be non-symmetric but assume only the restriction on the braid map for the Hopf algebra object (in that category) which is the main player in the theory. In the case of Hopf cyclic cohomology with (nontrivial) coefficients we also need to have similar restrictions on the braid map for the object(s) providing the coefficients datum. We present a family of examples of non-symmetric categories in which many objects with such a restrictions on the braid map exist (anyonic vector spaces).