List questions from exact-sequence

Published on 11 Jul 2017 - 15:05

569

Views

Show that the kernel of the stalk map is the stalk of the kernel sheaf

Published on 12 Jul 2017 - 13:59

137

Views

Exact sequence in $D(\mathcal{A})$?

Published on 16 Jul 2017 - 9:23

258

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Push-out expressed by morphisms between exact sequences

Published on 18 Jul 2017 - 11:17

188

Views

Short exact sequences of modules

Published on 19 Jul 2017 - 21:51

33

Views

map is an isomorphism

Published on 20 Jul 2017 - 14:49

128

Views

Example for fiber sequence which is not exact int the following sense

Published on 29 Mar 2026 - 1:35

1.8k

Views

Question about left exactness of the section functor for sheaves

Published on 28 Mar 2026 - 3:34

1.3k

Views

A short exact sequence with $M=M_1 \oplus M_2$ that does not split

Published on 09 Aug 2017 - 2:49

103

Views

short exact sequence and long exact sequence in cohomology in an abelian category ( with enough injective)

Published on 15 Aug 2017 - 8:45

62

Views

Exactness of $A\to A\amalg B\underset{(0,1)}\leftrightarrows B$

Published on 28 Mar 2026 - 8:10

47

Views

Replacing a group in an exact sequence remains exactness?

Published on 16 Aug 2017 - 14:47

566

Views

Exact sequence of abelian groups, special case

Published on 21 Aug 2017 - 0:29

392

Views

Exponential Sheaf Sequence Jacobian Curve

Published on 28 Mar 2026 - 6:59

321

Views

If $F : Ab \rightarrow Ab$ is an additive functor and $0 \rightarrow A \rightarrow B \rightarrow C \rightarrow 0$ is an exact split sequence then ...

Published on 27 Mar 2026 - 14:03

List Question

Functor reflecting short exact sequences vs exact sequences

Show that the kernel of the stalk map is the stalk of the kernel sheaf

Exact sequence in $D(\mathcal{A})$?

Push-out expressed by morphisms between exact sequences

Short exact sequences of modules

map is an isomorphism

Example for fiber sequence which is not exact int the following sense

Question about left exactness of the section functor for sheaves

A short exact sequence with $M=M_1 \oplus M_2$ that does not split

short exact sequence and long exact sequence in cohomology in an abelian category ( with enough injective)

Exactness of $A\to A\amalg B\underset{(0,1)}\leftrightarrows B$

Replacing a group in an exact sequence remains exactness?

Exact sequence of abelian groups, special case

Exponential Sheaf Sequence Jacobian Curve

If $F : Ab \rightarrow Ab$ is an additive functor and $0 \rightarrow A \rightarrow B \rightarrow C \rightarrow 0$ is an exact split sequence then ...

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