Divisibility and symmetry conjecture for links in Hopf algebras with the dual Chevalley property

Let HH be a non-cosemisimple Hopf algebra over k\Bbbk with the dual Chevalley property. Let M\mathcal{M} denote the set of simple subcoalgebras of HH, and let P\mathcal{P} be the relevant set of paths or links between simple subcoalgebras, with 1P\mid{}^{1}\mathcal{P}\mid, CP\mid{}^{\mathcal{C}}\mathcal{P}\mid, and PC\mid\mathcal{P}{}^{\mathcal{C}}\mid denoting the corresponding cardinalities for CM\mathcal{C}\in\mathcal{M}. Divisibility and symmetry conjecture. For every CM\mathcal{C}\in\mathcal{M},

1PCP.\mid{}^{1}\mathcal{P}\mid \big| \mid{}^{\mathcal{C}}\mathcal{P}\mid.

Moreover,

CP=PC.\mid{}^{\mathcal{C}}\mathcal{P}\mid=\mid\mathcal{P}{}^{\mathcal{C}}\mid.

The conjecture is proposed to guide further research on Hopf algebras with the dual Chevalley property; the supplied source does not state a resolution, so the divisibility and equality assertions remain open.

Sources & referencesView supporting material

Primary source

Jing Yu, Kangqiao Li and Gongxiang Liu, “Hopf algebras with the dual Chevalley property of finite corepresentation type”, arXiv:2308.09553 (2025).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.