Question

If $N$ is a subcomodule of $M$, then the H-submodule generated by $N$ is a H-Hopf-module of $M$.

score 108 · Answer 1 · 2026-03-21 10:14:52

108

Views

If $N$ is a subcomodule of $M$, then the H-submodule generated by $N$ is a H-Hopf-module of $M$.

Published on 21 Mar 2026 - 10:14

score 126 · Answer 2 · 2026-03-28 19:56:07

126

Views

What natural monoidal structure and braiding exists on the category of modules of the convolution algebra of an action groupoid?

Published on 28 Mar 2026 - 19:56

score 262 · Answer 3 · 2026-03-25 16:54:04

262

Views

Two different comultiplications on a Hopf algebra

Published on 25 Mar 2026 - 16:54

score 130 · Answer 4 · 2015-11-30 14:00:43

130

Views

Skew primitive elements of the Taft Hopf algebra

Published on 30 Nov 2015 - 14:00

score 312 · Answer 5 · 2015-12-03 11:09:50

312

Views

$\text{Hom}_k(M,N)\cong M^*\otimes_k N$ as Hopf-algebra modules.

Published on 03 Dec 2015 - 11:09

score 52 · Answer 6 · 2015-12-16 12:33:19

52

Views

Why does a skew-linear form on kG determine a triangular structure on k[G]?

Published on 16 Dec 2015 - 12:33

score 115 · Answer 7 · 2026-03-12 15:34:04

115

Views

Classification of group schemes of order 2: Why is $sx=x\otimes 1+1\otimes x-cx\otimes x$?

Published on 12 Mar 2026 - 15:34

score 129 · Answer 8 · 2016-01-23 19:14:05

129

Views

Algebra of matrix coefficients in the dual of a hopf algebra, confusing verification

Published on 23 Jan 2016 - 19:14

score 106 · Answer 9 · 2026-03-27 17:06:40

106

Views

$V(1)$ generates the tensor category of representations of $sl_2(\mathbb{C})$ - what exactly does this mean?

Published on 27 Mar 2026 - 17:06

score 56 · Answer 10 · 2016-01-24 04:42:26

56

Views

More Hopf algebra confusion: Verifying an equation between matrix coefficients.

Published on 24 Jan 2016 - 4:42

score 270 · Answer 11 · 2016-01-26 01:49:09

270

Views

$G$ equivariant quasicoherent sheaves on $X$ as compatible $G$ actions on the total spaces?

Published on 26 Jan 2016 - 1:49

score 196 · Answer 12 · 2016-01-26 23:56:53

196

Views

Does the antipode of a f.d. Hopf algebra have finite order

Published on 26 Jan 2016 - 23:56

score 478 · Answer 13 · 2016-02-03 14:07:49

478

Views

Antipode map, Hopf algebra

Published on 03 Feb 2016 - 14:07

score 147 · Answer 14 · 2016-02-06 12:08:44

147

Views

Structure theorem for non connected graded Hopf algebras

Published on 06 Feb 2016 - 12:08

score 618 · Answer 15 · 2016-02-14 23:39:17

618

Views

$\mathbb{G}_m$ action on $\operatorname{Spec}A$ is equivalent to grading... what does coassociativity do?

Published on 14 Feb 2016 - 23:39

List Question

If $N$ is a subcomodule of $M$, then the H-submodule generated by $N$ is a H-Hopf-module of $M$.

What natural monoidal structure and braiding exists on the category of modules of the convolution algebra of an action groupoid?

Two different comultiplications on a Hopf algebra

Skew primitive elements of the Taft Hopf algebra

$\text{Hom}_k(M,N)\cong M^*\otimes_k N$ as Hopf-algebra modules.

Why does a skew-linear form on kG determine a triangular structure on k[G]?

Classification of group schemes of order 2: Why is $sx=x\otimes 1+1\otimes x-cx\otimes x$?

Algebra of matrix coefficients in the dual of a hopf algebra, confusing verification

$V(1)$ generates the tensor category of representations of $sl_2(\mathbb{C})$ - what exactly does this mean?

More Hopf algebra confusion: Verifying an equation between matrix coefficients.

$G$ equivariant quasicoherent sheaves on $X$ as compatible $G$ actions on the total spaces?

Does the antipode of a f.d. Hopf algebra have finite order

Antipode map, Hopf algebra

Structure theorem for non connected graded Hopf algebras

$\mathbb{G}_m$ action on $\operatorname{Spec}A$ is equivalent to grading... what does coassociativity do?

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