List questions from homological-algebra

Published on 31 Aug 2016 - 14:56

72

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General methods for detecting torsion in a homology theory

Published on 01 Sep 2016 - 2:17

324

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Which conditions do we need to ensure that the cup product on cochains descends to cohomology?

Published on 27 Mar 2026 - 6:16

41

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Mapping on whole space inducing a mapping on homologies for a sphere,

Published on 02 Sep 2016 - 19:08

342

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Why it is a distinguished triangle?

Published on 22 Mar 2026 - 22:22

3k

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Rigorous text book on algebraic topology

Published on 01 Apr 2026 - 13:28

188

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Representation theories between Lie algebra and its 1-dim central extension

Published on 04 Sep 2016 - 19:03

471

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explicit formula for contraction of conus of homotopy equivalence

Published on 23 Mar 2026 - 7:02

41

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Why $Ext^i _A (AeA,X)=0$ is equivalent to $Ext^i _A (Y,X)=0$ for all $A/AeA$-modules $Y$?

Published on 07 Sep 2016 - 2:22

57

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What is $f_*$ of $f$?

Published on 07 Sep 2016 - 13:10

87

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The projective and injective modules of $End_A(V)$?

Published on 08 Sep 2016 - 8:44

381

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Based inclusion of chain complexes

Published on 08 Sep 2016 - 17:44

107

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Proof of a statement made in a paper by Hinich

Published on 08 Sep 2016 - 21:24

130

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How can I compute injective hulls of geometric quotients of noetherian rings by prime ideals?

Published on 26 Mar 2026 - 17:37

58

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Let $X, Y$ be smooth manifolds. The, for $p : X \times Y \to X$ the projection, is $p^*$ on complexes of sheaves exact?

Published on 26 Mar 2026 - 12:50

List Question

Why are hearts of t-structures of triangulated categories abelian?

General methods for detecting torsion in a homology theory

Which conditions do we need to ensure that the cup product on cochains descends to cohomology?

Mapping on whole space inducing a mapping on homologies for a sphere,

Why it is a distinguished triangle?

Rigorous text book on algebraic topology

Representation theories between Lie algebra and its 1-dim central extension

explicit formula for contraction of conus of homotopy equivalence

Why $Ext^i _A (AeA,X)=0$ is equivalent to $Ext^i _A (Y,X)=0$ for all $A/AeA$-modules $Y$?

What is $f_*$ of $f$?

The projective and injective modules of $End_A(V)$?

Based inclusion of chain complexes

Proof of a statement made in a paper by Hinich

How can I compute injective hulls of geometric quotients of noetherian rings by prime ideals?

Let $X, Y$ be smooth manifolds. The, for $p : X \times Y \to X$ the projection, is $p^*$ on complexes of sheaves exact?

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