On coideal subalgebras of cocentral Kac algebras and a generalization of Wall's conjecture

2012/03/25 by Burciu, Sebastian
#FOS: Mathematics #Quantum Algebra (math.QA)

paper · doi:10.48550/arxiv.1203.5491

Abstract

It shown that any coideal subalgebra of a finite dimensional Hopf algebra is a cyclic module over the dual Hopf algebra. Using this we describe all coideal subalgebras of a cocentral abelian extension of Hopf algebras extending some results from [4].

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