Question

Global dimension of a quiver with relations that do not overlap

score 98 · Answer 1 · 2022-02-05 23:22:59

98

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Global dimension of a quiver with relations that do not overlap

Published on 05 Feb 2022 - 23:22

score 209 · Answer 2 · 2022-02-14 23:24:20

209

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Formal derivative, any problems for non-commutative rings?

Published on 14 Feb 2022 - 23:24

score 141 · Answer 3 · 2022-02-15 19:45:31

141

Views

Questions regarding rings where every injective modules over them are also flat modules.

Published on 15 Feb 2022 - 19:45

score 87 · Answer 4 · 2022-02-18 09:27:46

87

Views

An $R$-division ring $(\mathcal{D},\varphi)$ is epic iff the division closure of $\varphi(R)$ in $\mathcal{D}$ is $\mathcal{D}$.

Published on 18 Feb 2022 - 9:27

score 42 · Answer 5 · 2026-03-26 12:48:31

42

Views

Metric connection as map from $\Omega^1 \, \to \, \Omega^1 \otimes \, \Omega^1$

Published on 26 Mar 2026 - 12:48

score 77 · Answer 6 · 2022-02-22 14:28:20

77

Views

Freyd-Mitchell embedding theorem with commutative rings

Published on 22 Feb 2022 - 14:28

score 75 · Answer 7 · 2026-03-29 21:13:05

75

Views

Can a matrix ring have a non-free ring extension?

Published on 29 Mar 2026 - 21:13

score 226 · Answer 8 · 2022-02-26 12:34:18

226

Views

Ring with three idempotents satisfying $\alpha+ \beta+ \gamma=0$. Prove that $\alpha=\beta= \gamma$.

Published on 26 Feb 2022 - 12:34

score 23 · Answer 9 · 2022-03-24 14:01:12

23

Views

Free product of quotients of free algebras

Published on 24 Mar 2022 - 14:01

score 24 · Answer 10 · 2022-03-24 19:29:03

24

Views

Matrices satisfying some conditions

Published on 24 Mar 2022 - 19:29

score 334 · Answer 11 · 2026-04-01 06:08:35

334

Views

Can you generalise the Chinese Remainder Theorem to noncommutative rings without identity?

Published on 01 Apr 2026 - 6:08

score 65 · Answer 12 · 2026-03-25 09:32:07

65

Views

Clifford algebra of a free bimodule over a noncommutative ring

Published on 25 Mar 2026 - 9:32

score 324 · Answer 13 · 2026-03-26 14:43:06

324

Views

Absolutely irreducible/simple $A$-module iff Endomorphism ring consists of scalar matrices

Published on 26 Mar 2026 - 14:43

score 63 · Answer 14 · 2026-03-30 05:57:59

63

Views

Left ideals of group algebra $K[\mathbb H]$

Published on 30 Mar 2026 - 5:57

score 24 · Answer 15 · 2022-04-22 19:35:47

24

Views

The module of section of a vector bundle and the module of section of the pullbackbundle are isomorphic

Published on 22 Apr 2022 - 19:35

List Question

Global dimension of a quiver with relations that do not overlap

Formal derivative, any problems for non-commutative rings?

Questions regarding rings where every injective modules over them are also flat modules.

An $R$-division ring $(\mathcal{D},\varphi)$ is epic iff the division closure of $\varphi(R)$ in $\mathcal{D}$ is $\mathcal{D}$.

Metric connection as map from $\Omega^1 \, \to \, \Omega^1 \otimes \, \Omega^1$

Freyd-Mitchell embedding theorem with commutative rings

Can a matrix ring have a non-free ring extension?

Ring with three idempotents satisfying $\alpha+ \beta+ \gamma=0$. Prove that $\alpha=\beta= \gamma$.

Free product of quotients of free algebras

Matrices satisfying some conditions

Can you generalise the Chinese Remainder Theorem to noncommutative rings without identity?

Clifford algebra of a free bimodule over a noncommutative ring

Absolutely irreducible/simple $A$-module iff Endomorphism ring consists of scalar matrices

Left ideals of group algebra $K[\mathbb H]$

The module of section of a vector bundle and the module of section of the pullbackbundle are isomorphic

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