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arXiv · 1208.5696

On the graded center of graded categories

Vladimir Turaev·Alexis Virelizier
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Abstract

We study the G-centers of G-graded monoidal categories where G is an arbitrary group. We prove that for any spherical G-fusion category C over an algebraically closed field such that the dimension of the neutral component of C is non-zero, the G-center of C is a G-modular category. This generalizes a theorem of M. M\"uger corresponding to G=1. We also exhibit interesting objects of the G-center.

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Vladimir Turaev, Alexis Virelizier. 2012-08-28. On the graded center of graded categories. https://arxiv.org/abs/1208.5696

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