Question

The property $m \otimes_A n = 0$ for modules over an algebra

score 40 · Answer 1 · 2026-05-15 01:53:33

40

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The property $m \otimes_A n = 0$ for modules over an algebra

Published on 15 May 2026 - 1:53

score 56 · Answer 2 · 2026-04-14 01:32:46

56

Views

Proving that a set is closed with respect to subtraction

Published on 14 Apr 2026 - 1:32

score 340 · Answer 3 · 2026-04-09 11:43:53

340

Views

Is a ring with order $2$ unique? (In the sense of isomorphism)

Published on 09 Apr 2026 - 11:43

score 329 · Answer 4 · 2026-04-12 22:10:45

329

Views

Does there exist a ring with $5$ elements with ${\rm Char}(R)=2$?

Published on 12 Apr 2026 - 22:10

score 52 · Answer 5 · 2026-04-12 11:26:09

52

Views

Definition of field characteristic: Why are these equivalent?

Published on 12 Apr 2026 - 11:26

score 73 · Answer 6 · 2026-03-26 01:34:36

73

Views

Inverse limit of rings of polynomials in many variables

Published on 26 Mar 2026 - 1:34

score 136 · Answer 7 · 2026-05-05 07:08:25

136

Views

If every subring of $S$ containing $v\in S$ is ring-finite over $R,$ is $v$ necessarily integral over $R$?

Published on 05 May 2026 - 7:08

score 904 · Answer 8 · 2026-04-15 10:05:41

904

Views

In a PID, every irreducible element is a prime element. What's wrong with following?

Published on 15 Apr 2026 - 10:05

score 62 · Answer 9 · 2026-04-10 04:08:46

62

Views

Characterization of Prufer rings

Published on 10 Apr 2026 - 4:08

score 46 · Answer 10 · 2026-05-15 01:52:11

46

Views

Vector bundle with space of sections Finite projective module

Published on 15 May 2026 - 1:52

score 67 · Answer 11 · 2026-03-26 06:29:06

67

Views

Ideal of formal power series over $\mathbb{R}$

Published on 26 Mar 2026 - 6:29

score 249 · Answer 12 · 2026-03-26 07:41:47

249

Views

Characterization of valuation rings

Published on 26 Mar 2026 - 7:41

score 135 · Answer 13 · 2026-04-11 20:22:46

135

Views

About the $1-ab$ invertible implies $1-ba$ invertible problem

Published on 11 Apr 2026 - 20:22

score 37 · Answer 14 · 2026-05-11 08:40:56

37

Views

Is the inclusion of a local $\mathbb R$-subalgebra of the algebra of continuous germs itself local?

Published on 11 May 2026 - 8:40

score 205 · Answer 15 · 2026-04-12 10:19:11

205

Views

Determine under what circumstances an involution on R is an automorphism

Published on 12 Apr 2026 - 10:19

List Question

The property $m \otimes_A n = 0$ for modules over an algebra

Proving that a set is closed with respect to subtraction

Is a ring with order $2$ unique? (In the sense of isomorphism)

Does there exist a ring with $5$ elements with ${\rm Char}(R)=2$?

Definition of field characteristic: Why are these equivalent?

Inverse limit of rings of polynomials in many variables

If every subring of $S$ containing $v\in S$ is ring-finite over $R,$ is $v$ necessarily integral over $R$?

In a PID, every irreducible element is a prime element. What's wrong with following?

Characterization of Prufer rings

Vector bundle with space of sections Finite projective module

Ideal of formal power series over $\mathbb{R}$

Characterization of valuation rings

About the $1-ab$ invertible implies $1-ba$ invertible problem

Is the inclusion of a local $\mathbb R$-subalgebra of the algebra of continuous germs itself local?

Determine under what circumstances an involution on R is an automorphism

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