Question

Dimension of center of k[G]/rad k[G] where characteristic of k divides the order of G.

score 72 · Answer 1 · 2026-03-25 12:50:50

72

Views

Dimension of center of k[G]/rad k[G] where characteristic of k divides the order of G.

Published on 25 Mar 2026 - 12:50

score 128 · Answer 2 · 2026-03-26 09:40:02

128

Views

(Left) Noetherian domains and Torsion submodules

Published on 26 Mar 2026 - 9:40

score 107 · Answer 3 · 2020-04-20 19:12:31

107

Views

a belongs to J(R) if and only if Ra is left quasi regular left ideal of R

Published on 20 Apr 2020 - 19:12

score 160 · Answer 4 · 2020-04-22 06:50:13

160

Views

Finite rings $R$ in which $x^{25}=x$ holds

Published on 22 Apr 2020 - 6:50

score 669 · Answer 5 · 2020-04-23 12:31:05

669

Views

Uniqueness of Artin-Wedderburn decomposition

Published on 23 Apr 2020 - 12:31

score 109 · Answer 6 · 2020-04-25 23:29:57

109

Views

If $\mathrm{Ext}^n_R (M,R/\mathrm{rad}(R))=0$ for all $n\geq 1$, then $\mathrm{Ext}^n_R (M,N)=0$ for all $n\geq 1$.

Published on 25 Apr 2020 - 23:29

score 37 · Answer 7 · 2026-03-26 07:35:29

37

Views

Irreducible characters of k[G] when k is not algebraically closed and char k divides order of G.

Published on 26 Mar 2026 - 7:35

score 92 · Answer 8 · 2020-05-02 18:18:24

92

Views

Is any ring with a homomorphism out of a full matrix ring necessarily itself isomorphic to a full matrix ring?

Published on 02 May 2020 - 18:18

score 104 · Answer 9 · 2020-05-05 20:37:44

104

Views

Is there a module over a noncommutative domain in which the torsion elements do not form a submodule?

Published on 05 May 2020 - 20:37

score 86 · Answer 10 · 2026-03-25 06:04:50

86

Views

Showing that two path algebra quotients aren't isomorphic

Published on 25 Mar 2026 - 6:04

score 804 · Answer 11 · 2020-05-08 13:16:38

804

Views

Determinant of a matrix for non-commutative products

Published on 08 May 2020 - 13:16

score 364 · Answer 12 · 2026-03-25 10:57:16

364

Views

If in a commutative ring $R$ a maximal ideal is nilpotent, then $R$ is local

Published on 25 Mar 2026 - 10:57

score 30 · Answer 13 · 2026-03-26 04:33:01

30

Views

Show there exists a non-commutative cancellative semigroup with generators $w,x$ satisfying $xwx=ww$

Published on 26 Mar 2026 - 4:33

score 38 · Answer 14 · 2026-03-25 12:54:37

38

Views

Dimension of the dual of a simple module over a simple $\mathbb{C}$-algebra.

Published on 25 Mar 2026 - 12:54

score 53 · Answer 15 · 2026-03-25 17:51:58

53

Views

What is the correct name for a "product function" on a monoid?

Published on 25 Mar 2026 - 17:51

List Question

Dimension of center of k[G]/rad k[G] where characteristic of k divides the order of G.

(Left) Noetherian domains and Torsion submodules

a belongs to J(R) if and only if Ra is left quasi regular left ideal of R

Finite rings $R$ in which $x^{25}=x$ holds

Uniqueness of Artin-Wedderburn decomposition

If $\mathrm{Ext}^n_R (M,R/\mathrm{rad}(R))=0$ for all $n\geq 1$, then $\mathrm{Ext}^n_R (M,N)=0$ for all $n\geq 1$.

Irreducible characters of k[G] when k is not algebraically closed and char k divides order of G.

Is any ring with a homomorphism out of a full matrix ring necessarily itself isomorphic to a full matrix ring?

Is there a module over a noncommutative domain in which the torsion elements do not form a submodule?

Showing that two path algebra quotients aren't isomorphic

Determinant of a matrix for non-commutative products

If in a commutative ring $R$ a maximal ideal is nilpotent, then $R$ is local

Show there exists a non-commutative cancellative semigroup with generators $w,x$ satisfying $xwx=ww$

Dimension of the dual of a simple module over a simple $\mathbb{C}$-algebra.

What is the correct name for a "product function" on a monoid?

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