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arXiv · 1203.5491

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

Sebastian Burciu
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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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Sebastian Burciu. 2012-03-25. On coideal subalgebras of cocentral Kac algebras and a generalization of Wall's conjecture. https://arxiv.org/abs/1203.5491

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