Question

Connection between Chladni Plates and Projective Geometry?

score 55 · Answer 1 · 2026-03-25 09:35:44

55

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Connection between Chladni Plates and Projective Geometry?

Published on 25 Mar 2026 - 9:35

score 255 · Answer 2 · 2015-03-30 11:35:36

255

Views

$\text{Coker}(f),\text{Coker}(g)$ projective modules $\Rightarrow$ $\text{Coker}(gf)$ projective

Published on 30 Mar 2015 - 11:35

score 588 · Answer 3 · 2015-04-01 10:51:05

588

Views

A question about the quotient of two chain complexes of $R$-modules

Published on 01 Apr 2015 - 10:51

score 545 · Answer 4 · 2015-04-06 07:20:59

545

Views

Two short exact sequences with projective objects in the middle

Published on 06 Apr 2015 - 7:20

score 1.5k · Answer 5 · 2026-03-27 00:04:36

1.5k

Views

"Direct sums of injective modules over Noetherian ring is injective" and its analogue

Published on 27 Mar 2026 - 0:04

score 3.6k · Answer 6 · 2015-04-20 07:45:57

3.6k

Views

$P$ is projective . Show that $P$ is a direct summand of a free $R-$ module

Published on 20 Apr 2015 - 7:45

score 357 · Answer 7 · 2015-04-20 10:18:40

357

Views

Why is the $\mathbb Z$-module $\mathbb Q$ projective in category $\sigma[\mathbb Q]$?

Published on 20 Apr 2015 - 10:18

score 621 · Answer 8 · 2026-03-28 10:35:12

621

Views

Short exact sequence of modules over a Noetherian local ring of depth $1$.

Published on 28 Mar 2026 - 10:35

score 252 · Answer 9 · 2015-04-23 19:20:16

252

Views

Is $m$ a projective $A$-module?

Published on 23 Apr 2015 - 19:20

score 98 · Answer 10 · 2015-04-28 06:39:40

98

Views

generalized inverse in the theory of projective module

Published on 28 Apr 2015 - 6:39

score 1.9k · Answer 11 · 2026-03-26 22:13:42

1.9k

Views

example of inverse limit and direct limit

Published on 26 Mar 2026 - 22:13

score 107 · Answer 12 · 2015-05-03 15:53:11

107

Views

Does the nilpotent extension of a $1$-dimensional algebra always give a projective module?

Published on 03 May 2015 - 15:53

score 236 · Answer 13 · 2015-05-22 16:34:56

236

Views

If M and N are nonzero, finitely generated R-modules with M projective, then $M\otimes N$ is nonzero

Published on 22 May 2015 - 16:34

score 63 · Answer 14 · 2015-05-27 04:12:43

63

Views

If $A \times B$ is the direct product of two rings, must $A$ necessarily be a projective $A \times B$-module?

Published on 27 May 2015 - 4:12

score 31 · Answer 15 · 2026-03-26 22:18:05

31

Views

Prove that if $A$ is $R$-projective and $C$ is $S$-injective then $\operatorname{Hom}_R(A,C)$ is $S$-injective

Published on 26 Mar 2026 - 22:18

List Question

Connection between Chladni Plates and Projective Geometry?

$\text{Coker}(f),\text{Coker}(g)$ projective modules $\Rightarrow$ $\text{Coker}(gf)$ projective

A question about the quotient of two chain complexes of $R$-modules

Two short exact sequences with projective objects in the middle

"Direct sums of injective modules over Noetherian ring is injective" and its analogue

$P$ is projective . Show that $P$ is a direct summand of a free $R-$ module

Why is the $\mathbb Z$-module $\mathbb Q$ projective in category $\sigma[\mathbb Q]$?

Short exact sequence of modules over a Noetherian local ring of depth $1$.

Is $m$ a projective $A$-module?

generalized inverse in the theory of projective module

example of inverse limit and direct limit

Does the nilpotent extension of a $1$-dimensional algebra always give a projective module?

If M and N are nonzero, finitely generated R-modules with M projective, then $M\otimes N$ is nonzero

If $A \times B$ is the direct product of two rings, must $A$ necessarily be a projective $A \times B$-module?

Prove that if $A$ is $R$-projective and $C$ is $S$-injective then $\operatorname{Hom}_R(A,C)$ is $S$-injective

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