1 citations · 1 across the 2 of their papers we have counts for
2 papers
math.QA2023
Left coideal subalgebras of Nichols algebras
Istvan Heckenberger, Katharina Schäfer
We determine all Nichols algebras of finite-dimensional Yetter-Drinfeld modules over groups such that all its left coideal subalgebras in the category of -graded como…
math.QA2022★ 1 cited
A decomposition Theorem for pointed braided Hopf algebras
Istvan Heckenberger, Katharina Schäfer
A known fundamental Theorem for braided pointed Hopf algebras states that for each coideal subalgebra, that fulfils a few properties, there is an associated quotient coalgebra righ…