arXiv subjects

Nicol'as Andruskiewitsch

Publications and source records attributed to Nicol'as Andruskiewitsch.

2 recordsLinked to original sources

arXiv2006

On pointed Hopf algebras associated to unmixed conjugacy classes in S_n

Let s in S_n be a product of disjoint cycles of the same length, C the conjugacy class of s and rho an irreducible representation of the isotropy group of s. We prove that either the Nichols algebra B(C, rho) is infinite-dimensional, or the braiding of the Yetter-Drinfeld module is negative.

math.QA↗

arXiv2006

On pointed Hopf algebras associated to some conjugacy classes in S_n

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.

math.QA↗