List questions from exact-sequence

Published on 13 Nov 2016 - 12:27

157

Views

Intersection of $\operatorname{Ker}f$ and $G/\operatorname{Ker}f$ is zero

Published on 19 Nov 2016 - 23:46

95

Views

existence of an exact complex

Published on 23 Nov 2016 - 3:06

139

Views

Relationship on a complex of vector spaces

Published on 24 Nov 2016 - 3:12

794

Views

Finitely generated modules over PID's

Published on 25 Nov 2016 - 14:45

837

Views

When does the residue field of a local ring embed back into the local ring (nicely)?

Published on 25 Mar 2026 - 13:59

91

Views

A property of faithfully flat modules

Published on 26 Mar 2026 - 7:58

125

Views

$\frac{SU(2)}{N}= U(1) \times Z_2$. Find $N$?

Published on 06 Dec 2016 - 22:14

53

Views

Can $\frac{SO(5)}{N}= SU(2) \times SO(2)$ be true?

Published on 07 Dec 2016 - 0:01

43

Views

Tor, deleted term,exactness, $Tor_0$,exact sequences

Published on 25 Mar 2026 - 19:02

118

Views

A particular exact sequence in an abelian category

Published on 11 Dec 2016 - 23:34

25

Views

Constructing smaller exact sequence from a longer one

Published on 15 Dec 2016 - 8:47

507

Views

Decompose a group $G$ into a normal subgroup $N$ and quotient group $Q$

Published on 17 Dec 2016 - 0:46

44

Views

Tor functor,deleted last term,exactness

Published on 25 Mar 2026 - 22:09

322

Views

What is an example of ideals $I$ and $J$ such that the sequence $0\to I\cap J\to I\oplus J\to I+J\to 0$ is not split?

Published on 31 Dec 2016 - 9:47

List Question

The left exact functor $Hom_A(X,-)$

Intersection of $\operatorname{Ker}f$ and $G/\operatorname{Ker}f$ is zero

existence of an exact complex

Relationship on a complex of vector spaces

Finitely generated modules over PID's

When does the residue field of a local ring embed back into the local ring (nicely)?

A property of faithfully flat modules

$\frac{SU(2)}{N}= U(1) \times Z_2$. Find $N$?

Can $\frac{SO(5)}{N}= SU(2) \times SO(2)$ be true?

Tor, deleted term,exactness, $Tor_0$,exact sequences

A particular exact sequence in an abelian category

Constructing smaller exact sequence from a longer one

Decompose a group $G$ into a normal subgroup $N$ and quotient group $Q$

Tor functor,deleted last term,exactness

What is an example of ideals $I$ and $J$ such that the sequence $0\to I\cap J\to I\oplus J\to I+J\to 0$ is not split?

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