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math.QA2026
On stable twist 2-groups of quasi-Hopf algebras
Siu-Hung Ng, Xingting Wang
For any finite-dimensional quasi-Hopf algebra , we define the notion of a stable twist of . We show that stable twists form a strict 2-group $\2ust(A)$, which is equivalent t…
math.QA2018★ 9 cited
Hopf algebras of prime dimension in positive characteristic
Siu-Hung Ng, Xingting Wang
We prove that a Hopf algebra of prime dimension over an algebraically closed field, whose characteristic is equal to , is either a group algebra or a restricted universal en…