Question

Grassmannian as a functor and the rank of a projective module.

score 109 · Answer 1 · 2026-03-25 01:37:47

109

Views

Grassmannian as a functor and the rank of a projective module.

Published on 25 Mar 2026 - 1:37

score 61 · Answer 2 · 2026-03-27 16:39:13

61

Views

What does it mean for $\mathcal{C}$ to be a $\mathcal{D}$-module, when $\mathcal{C}$ and $\mathcal{D}$ are categories?

Published on 27 Mar 2026 - 16:39

score 29 · Answer 3 · 2018-08-01 17:37:02

29

Views

characterization of submodule of and of linear application.

Published on 01 Aug 2018 - 17:37

score 59 · Answer 4 · 2026-03-27 16:37:53

59

Views

quotient module with dimensional 1

Published on 27 Mar 2026 - 16:37

score 37 · Answer 5 · 2018-08-01 20:33:56

37

Views

Show that $(X,X^2+1)$ generate $A[X]$ as $A[X]$-module but is not free.

Published on 01 Aug 2018 - 20:33

score 272 · Answer 6 · 2018-08-01 21:10:23

272

Views

Bases and generating list of $\mathbb Z/6\mathbb Z$ as $\mathbb Z$ module.

Published on 01 Aug 2018 - 21:10

score 1.4k · Answer 7 · 2026-03-25 07:50:15

1.4k

Views

Nilpotent Jacobson radical

Published on 25 Mar 2026 - 7:50

score 1k · Answer 8 · 2026-03-25 17:29:23

1k

Views

Projective and flat vs. faithfully flat

Published on 25 Mar 2026 - 17:29

score 226 · Answer 9 · 2026-03-25 09:38:08

226

Views

Confusion about the quotient $\mathbb Z^4/H$

Published on 25 Mar 2026 - 9:38

score 451 · Answer 10 · 2018-08-05 01:37:31

451

Views

Direct sums of left ideals and orthogonal idempotents

Published on 05 Aug 2018 - 1:37

score 284 · Answer 11 · 2018-08-05 01:54:47

284

Views

Cartesian product of fields is semisimple iff the index set is finite

Published on 05 Aug 2018 - 1:54

score 306 · Answer 12 · 2018-08-05 07:02:19

306

Views

$N/K$ is direct summand of $M/K$ implies $N$ is direct summand of $M$

Published on 05 Aug 2018 - 7:02

score 240 · Answer 13 · 2018-08-06 00:51:05

240

Views

Endomorphisms of $\mathbb Z$-modules are the same as those of $\mathbb F_p$-vector spaces

Published on 06 Aug 2018 - 0:51

score 667 · Answer 14 · 2026-03-25 08:00:36

667

Views

Differentials on the second page of the spectral sequence of a first quadrant double complex

Published on 25 Mar 2026 - 8:00

score 49 · Answer 15 · 2018-08-06 10:50:05

49

Views

Abelian $\operatorname{Hom}(-,X)$ in $\mathcal{Alg}_{R/A}$

Published on 06 Aug 2018 - 10:50

List Question

Grassmannian as a functor and the rank of a projective module.

What does it mean for $\mathcal{C}$ to be a $\mathcal{D}$-module, when $\mathcal{C}$ and $\mathcal{D}$ are categories?

characterization of submodule of and of linear application.

quotient module with dimensional 1

Show that $(X,X^2+1)$ generate $A[X]$ as $A[X]$-module but is not free.

Bases and generating list of $\mathbb Z/6\mathbb Z$ as $\mathbb Z$ module.

Nilpotent Jacobson radical

Projective and flat vs. faithfully flat

Confusion about the quotient $\mathbb Z^4/H$

Direct sums of left ideals and orthogonal idempotents

Cartesian product of fields is semisimple iff the index set is finite

$N/K$ is direct summand of $M/K$ implies $N$ is direct summand of $M$

Endomorphisms of $\mathbb Z$-modules are the same as those of $\mathbb F_p$-vector spaces

Differentials on the second page of the spectral sequence of a first quadrant double complex

Abelian $\operatorname{Hom}(-,X)$ in $\mathcal{Alg}_{R/A}$

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