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math.QA2005★ 84 cited
Central Invariants and Higher Indicators for Semisimple Quasi-Hopf Algebras
Siu-Hung Ng, Peter Schauenburg
In this paper, we define the higher Frobenius-Schur (FS-)indicators for finite-dimensional modules of a semisimple quasi-Hopf algebra via the categorical counterpart develo…
math.QA2005★ 71 cited
Higher Frobenius-Schur Indicators for Pivotal Categories
Siu-Hung Ng, Peter Schauenburg
We define higher Frobenius-Schur indicators for objects in linear pivotal monoidal categories. We prove that they are category invariants, and take values in the cyclotomic integer…