English

2-C*-categories with non-simple units

Category Theory 2007-05-23 v1 Operator Algebras

Abstract

We study the general structure of 2-C*-categories closed under conjugation, projections and direct sums. We do not assume units to be simple, i.e. for i_A the 1-unit corresponding to an object A, the space Hom(i_A, i_A) is a commutative unital C*-algebra. We show that 2-arrows can be viewed as continuous sections in Hilbert bundles and describe the behaviour of the fibres with respect to the categorical structure. We give an example of a 2-C*-Category giving rise to bundles of finite Hopf-algebras in duality. We make some remarks concerning Frobenius algebras and Q-systems in the general context of tensor C*-categories with non-simple units.

Keywords

Cite

@article{arxiv.math/0509266,
  title  = {2-C*-categories with non-simple units},
  author = {Pasquale A. Zito},
  journal= {arXiv preprint arXiv:math/0509266},
  year   = {2007}
}

Comments

47 pages