Fusion Rings Arising from Normal Hopf Subalgebras
نویسنده
چکیده
For any normal commutative Hopf subalgebra K = k of a semisimple Hopf algebra we describe the ring inside kG obtained by the restriction of H-modules. If G = Zp this ring determines a fusion ring and we give a complete description for it. The case G = Zpn and some other applications are presented.
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