On pointed Hopf algebras associated to some conjugacy classes in Sn
Nicol'as Andruskiewitsch, Shouchuan Zhang
math.QAarXiv:math/0511020
Abstract
We show that any pointed Hopf algebra with infinitesimal braiding associated to the conjugacy class of pi in Sn 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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