List questions from hopf-algebras | MathQA

Quantum plane is a bialgebra

Published on 26 Mar 2026 - 17:51

$M^{H^*}= M^{coH}$, $M^H=M^{coH^o}$ for a Hopf algebra $H$

Published on 26 Mar 2026 - 14:34

An isomorphism in a note by Witherspoon

Published on 04 Oct 2022 - 11:35

Can we define tensor product of modules over an algebra?

Published on 21 Nov 2022 - 5:48

Grouplike elements is a group in a Hopf algebra

Published on 22 Nov 2022 - 14:02

Understanding tensor product of modules over Hopf algebras

Published on 25 Mar 2026 - 16:02

Which algebraic subvarieties of a group variety have a group structure?

Published on 13 Dec 2022 - 11:19

If $\Delta(c) = \Delta^{\mathrm{op}}(c)$, then under which permutations is $c_{(1)} \otimes \dotsb \otimes c_{(n)}$ invariant?

Published on 26 Mar 2026 - 14:34

Poincare series of a graded algebra

Published on 25 Mar 2026 - 14:26

Poincare Series of a graded algebra (revisited)

Published on 25 Mar 2026 - 22:06