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On pointed Hopf algebras associated to some conjugacy classes in S_n

Nicol'as Andruskiewitsch·Shouchuan Zhang
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Abstract

We show that any pointed Hopf algebra with infinitesimal braiding associated to the conjugacy class of pi in S_n is infinite-dimensional, if either the order of pi is odd, or pi is a product of disjoint cycles of odd order except for exactly two transpositions.

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Nicol'as Andruskiewitsch, Shouchuan Zhang. 2006-06-05. On pointed Hopf algebras associated to some conjugacy classes in S_n. https://arxiv.org/abs/math/0511020

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