Question

Bimodule over division algebras

score 59 · Answer 1 · 2026-03-25 11:12:21

59

Views

Bimodule over division algebras

Published on 25 Mar 2026 - 11:12

score 76 · Answer 2 · 2026-03-26 09:38:57

76

Views

Noetherian modules and Noetherian rings

Published on 26 Mar 2026 - 9:38

score 91 · Answer 3 · 2020-04-02 09:33:29

91

Views

Is there any difference between a maximal regular left ideal and a regular maximal left ideal?

Published on 02 Apr 2020 - 9:33

score 99 · Answer 4 · 2026-03-25 23:52:20

99

Views

Must the product of a nil ideal with a minimal right ideal be 0?

Published on 25 Mar 2026 - 23:52

score 40 · Answer 5 · 2020-04-05 22:01:00

40

Views

Evaluating a commutator involving exponentials?

Published on 05 Apr 2020 - 22:01

score 23 · Answer 6 · 2026-02-23 02:40:44

23

Views

Can we make any conclusion on the numerators of elements in the fraction division ring $D(x)$?

Published on 23 Feb 2026 - 2:40

score 97 · Answer 7 · 2020-04-08 13:05:52

97

Views

Describing all the irreducible and f.g. completely reducible modules over $\mathbb{C}[x,y]$

Published on 08 Apr 2020 - 13:05

score 467 · Answer 8 · 2020-04-09 13:33:22

467

Views

Tensor product of matrix algebras over field

Published on 09 Apr 2020 - 13:33

score 685 · Answer 9 · 2026-03-25 11:16:23

685

Views

Why is the constant term of $(1+x+y+xy)^n$ equal to $\frac{1}{2}\binom{2n}{n}$？

Published on 25 Mar 2026 - 11:16

score 74 · Answer 10 · 2026-03-25 23:58:47

74

Views

Is there a functor $F$ of left modules preserving $\oplus$ by arbitrary isomorphism, but its restriction to fin. gen. proj. modules isn't additive?

Published on 25 Mar 2026 - 23:58

score 102 · Answer 11 · 2026-02-23 02:15:30

102

Views

Must $\operatorname{Soc}(R)^2 =\operatorname{Soc}(R)^3$ (for a ring $R$)?

Published on 23 Feb 2026 - 2:15

score 240 · Answer 12 · 2026-03-25 12:50:49

240

Views

Let $x^2=y^2=1$ and $xy\neq yx$. There are $\binom{2n}{n}$ expressions of length $2n$ in $x$ and $y$ that are equal to $1$.

Published on 25 Mar 2026 - 12:50

score 1k · Answer 13 · 2020-04-15 10:08:46

1k

Views

Example of an algebra which is not isomorphic to its opposite

Published on 15 Apr 2020 - 10:08

score 35 · Answer 14 · 2020-04-16 09:26:15

35

Views

Is the tensor product of prime algebras prime?

Published on 16 Apr 2020 - 9:26

score 464 · Answer 15 · 2020-04-17 12:00:28

464

Views

A question about a maximal ideal $M$ in a non-commutative ring $R$ having identity but without zero divisors and its quotient ring $R/M$.

Published on 17 Apr 2020 - 12:00

List Question

Bimodule over division algebras

Noetherian modules and Noetherian rings

Is there any difference between a maximal regular left ideal and a regular maximal left ideal?

Must the product of a nil ideal with a minimal right ideal be 0?

Evaluating a commutator involving exponentials?

Can we make any conclusion on the numerators of elements in the fraction division ring $D(x)$?

Describing all the irreducible and f.g. completely reducible modules over $\mathbb{C}[x,y]$

Tensor product of matrix algebras over field

Why is the constant term of $(1+x+y+xy)^n$ equal to $\frac{1}{2}\binom{2n}{n}$？

Is there a functor $F$ of left modules preserving $\oplus$ by arbitrary isomorphism, but its restriction to fin. gen. proj. modules isn't additive?

Must $\operatorname{Soc}(R)^2 =\operatorname{Soc}(R)^3$ (for a ring $R$)?

Let $x^2=y^2=1$ and $xy\neq yx$. There are $\binom{2n}{n}$ expressions of length $2n$ in $x$ and $y$ that are equal to $1$.

Example of an algebra which is not isomorphic to its opposite

Is the tensor product of prime algebras prime?

A question about a maximal ideal $M$ in a non-commutative ring $R$ having identity but without zero divisors and its quotient ring $R/M$.

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