Question

Along a finite ring extension, the restriction of invertible ideals cannot be zero

score 146 · Answer 1 · 2018-06-08 14:33:59

146

Views

Along a finite ring extension, the restriction of invertible ideals cannot be zero

Published on 08 Jun 2018 - 14:33

score 56 · Answer 2 · 2026-03-25 04:38:56

56

Views

About equivalent formulations of right exact sequences

Published on 25 Mar 2026 - 4:38

score 124 · Answer 3 · 2026-03-22 22:18:51

124

Views

Does flatness ascend through a free ring map?

Published on 22 Mar 2026 - 22:18

score 138 · Answer 4 · 2026-03-25 12:24:56

138

Views

Valuation ring of finite Krull dimension whose every non-maximal ideal is principal

Published on 25 Mar 2026 - 12:24

score 62 · Answer 5 · 2026-03-25 01:24:02

62

Views

Artinian local ring with every non-maximal ideal being principal

Published on 25 Mar 2026 - 1:24

score 88 · Answer 6 · 2018-06-09 11:01:33

88

Views

If $f$ is a non-unit element of an integral damain $A$, then $A[f^{-1}]$ is not finitely generated $A$-module.

Published on 09 Jun 2018 - 11:01

score 353 · Answer 7 · 2026-03-25 09:48:55

353

Views

Does totally ordered prime ideals in a domain imply valuation ring?

Published on 25 Mar 2026 - 9:48

score 426 · Answer 8 · 2026-03-25 03:21:25

426

Views

Intersections of all neighbourhoods of $0$ in a topological group is a subgroup

Published on 25 Mar 2026 - 3:21

score 106 · Answer 9 · 2026-03-30 00:24:37

106

Views

What are the maximal ideals containing the intersection of maximal ideals?

Published on 30 Mar 2026 - 0:24

score 696 · Answer 10 · 2026-03-26 07:48:26

696

Views

Tensor product identity: proof without explicit construction

Published on 26 Mar 2026 - 7:48

score 650 · Answer 11 · 2026-03-22 23:52:24

650

Views

Can it be that $R[[x]]$ is flat over $R$ but not over $R[x]$?

Published on 22 Mar 2026 - 23:52

score 1.3k · Answer 12 · 2018-06-12 05:12:16

1.3k

Views

Check my proof that the nilradical and the Jacobson radical are equal (A&M 1.6)

Published on 12 Jun 2018 - 5:12

score 390 · Answer 13 · 2026-03-26 23:23:15

390

Views

injective dimension and Ext

Published on 26 Mar 2026 - 23:23

score 80 · Answer 14 · 2018-06-12 20:23:59

80

Views

Why is the following map injective

Published on 12 Jun 2018 - 20:23

score 177 · Answer 15 · 2026-03-30 00:16:27

177

Views

Are global complete intersections locally complete intersections?

Published on 30 Mar 2026 - 0:16

List Question

Along a finite ring extension, the restriction of invertible ideals cannot be zero

About equivalent formulations of right exact sequences

Does flatness ascend through a free ring map?

Valuation ring of finite Krull dimension whose every non-maximal ideal is principal

Artinian local ring with every non-maximal ideal being principal

If $f$ is a non-unit element of an integral damain $A$, then $A[f^{-1}]$ is not finitely generated $A$-module.

Does totally ordered prime ideals in a domain imply valuation ring?

Intersections of all neighbourhoods of $0$ in a topological group is a subgroup

What are the maximal ideals containing the intersection of maximal ideals?

Tensor product identity: proof without explicit construction

Can it be that $R[[x]]$ is flat over $R$ but not over $R[x]$?

Check my proof that the nilradical and the Jacobson radical are equal (A&M 1.6)

injective dimension and Ext

Why is the following map injective

Are global complete intersections locally complete intersections?

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