Question

How to get $B$ and $B_{\nu_B}$ are not isomorphic as $B$-bimodules because $\nu_B$ is not an inner automorphism?

score 34 · Answer 1 · 2026-04-16 06:47:50

34

Views

How to get $B$ and $B_{\nu_B}$ are not isomorphic as $B$-bimodules because $\nu_B$ is not an inner automorphism?

Published on 16 Apr 2026 - 6:47

score 310 · Answer 2 · 2026-04-09 08:26:35

310

Views

A question about the socle of an algebra.

Published on 09 Apr 2026 - 8:26

score 22 · Answer 3 · 2026-04-13 09:54:02

22

Views

Finitely generated modules

Published on 13 Apr 2026 - 9:54

score 1.3k · Answer 4 · 2026-04-15 17:29:03

1.3k

Views

Let $M$ be a free $R$-module, and let it have an infinite basis. Then all bases of $M$ have the same cardinality

Published on 15 Apr 2026 - 17:29

score 563 · Answer 5 · 2026-04-14 21:14:58

563

Views

A consequence of the Snake lemma

Published on 14 Apr 2026 - 21:14

score 421 · Answer 6 · 2026-04-12 22:34:40

421

Views

Canonical homomorphism from a group ring to its subring.

Published on 12 Apr 2026 - 22:34

score 34 · Answer 7 · 2026-04-16 12:40:47

34

Views

Discrete $\mathbb{Z}_p[K]$ module with no K invariants is Trivial

Published on 16 Apr 2026 - 12:40

score 177 · Answer 8 · 2026-04-13 03:23:01

177

Views

Proving columns of a commutative diagram of $R-$modules are exact

Published on 13 Apr 2026 - 3:23

score 373 · Answer 9 · 2026-04-16 00:34:04

373

Views

Bijective correspondence between indecomposable modules and simple modules

Published on 16 Apr 2026 - 0:34

score 120 · Answer 10 · 2026-04-13 21:42:33

120

Views

Isomorphic groups algebras with non-isomorphic groups

Published on 13 Apr 2026 - 21:42

score 60 · Answer 11 · 2026-04-11 18:53:11

60

Views

A tensor product between a matrix and a field.

Published on 11 Apr 2026 - 18:53

score 2k · Answer 12 · 2026-04-14 02:36:24

2k

Views

Characterising subgroups of Prüfer $p$-groups.

Published on 14 Apr 2026 - 2:36

score 856 · Answer 13 · 2026-04-14 18:31:29

856

Views

What is $B/A \cap B$ for $R$-submodules $A,B$ of an $R$-module $M$?

Published on 14 Apr 2026 - 18:31

score 264 · Answer 14 · 2026-04-16 04:13:21

264

Views

Nil and Nilpotent Modules

Published on 16 Apr 2026 - 4:13

score 211 · Answer 15 · 2026-04-16 07:27:12

211

Views

All simple cyclic module over $k[x]$ is of the form $k[x]/(f)$ with $f$ prime.

Published on 16 Apr 2026 - 7:27

List Question

How to get $B$ and $B_{\nu_B}$ are not isomorphic as $B$-bimodules because $\nu_B$ is not an inner automorphism?

A question about the socle of an algebra.

Finitely generated modules

Let $M$ be a free $R$-module, and let it have an infinite basis. Then all bases of $M$ have the same cardinality

A consequence of the Snake lemma

Canonical homomorphism from a group ring to its subring.

Discrete $\mathbb{Z}_p[K]$ module with no K invariants is Trivial

Proving columns of a commutative diagram of $R-$modules are exact

Bijective correspondence between indecomposable modules and simple modules

Isomorphic groups algebras with non-isomorphic groups

A tensor product between a matrix and a field.

Characterising subgroups of Prüfer $p$-groups.

What is $B/A \cap B$ for $R$-submodules $A,B$ of an $R$-module $M$?

Nil and Nilpotent Modules

All simple cyclic module over $k[x]$ is of the form $k[x]/(f)$ with $f$ prime.

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