List questions from derived-functors

Published on 11 Apr 2026 - 16:13

106

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Computing $H^\bullet(\Bbb Z/n\Bbb Z)$

Published on 12 Apr 2026 - 22:43

2.9k

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how to derive the canonical form of a transfer second order equation?

Published on 12 Apr 2026 - 1:28

436

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Homotopy limits

Published on 30 Apr 2026 - 13:41

514

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Ext functor commutes with connecting homomorphisms?

Published on 11 Apr 2026 - 7:25

173

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Another description for the map $\text{Ext}^1_\mathbb{Z}(A,G)\to H^2(G,A)$

Published on 12 Apr 2026 - 19:12

2.1k

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Relation between long exact sequences and Derived functors

Published on 10 May 2026 - 17:08

167

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Confusion in Serre's Local fields book

Published on 11 Apr 2026 - 22:56

186

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Do any 2 morphisms from objects $X$ to $Y$ define a chain homotopy equivalence?

Published on 14 Apr 2026 - 12:49

416

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If $F$ is a left exact functor is $A$ acyclic iff $F$ preserves exactness of every SES $0\to A\to B\to C\to 0$?

Published on 14 Apr 2026 - 4:25

501

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Question on how to get back "classical" Serre-duality from its derived functor formulation

Published on 14 Apr 2026 - 12:22

177

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A certain natural map between Tor functors

Published on 14 Apr 2026 - 0:09

86

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Extensions of $\mathbb{Z}/(m)$ by $\mathbb{Z}$

Published on 09 Apr 2026 - 5:35

77

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First Derivative The slope at the sample points

Published on 11 Apr 2026 - 17:55

369

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Andre-Quillen Homology of the cuspidal curve $k[x,y]/(x^2 - y^3)$

Published on 16 Apr 2026 - 1:15

List Question

Behaviour of $\operatorname{Ext}$ with left exact sequences.

Computing $H^\bullet(\Bbb Z/n\Bbb Z)$

how to derive the canonical form of a transfer second order equation?

Homotopy limits

Ext functor commutes with connecting homomorphisms?

Another description for the map $\text{Ext}^1_\mathbb{Z}(A,G)\to H^2(G,A)$

Relation between long exact sequences and Derived functors

Confusion in Serre's Local fields book

Do any 2 morphisms from objects $X$ to $Y$ define a chain homotopy equivalence?

If $F$ is a left exact functor is $A$ acyclic iff $F$ preserves exactness of every SES $0\to A\to B\to C\to 0$?

Question on how to get back "classical" Serre-duality from its derived functor formulation

A certain natural map between Tor functors

Extensions of $\mathbb{Z}/(m)$ by $\mathbb{Z}$

First Derivative The slope at the sample points

Andre-Quillen Homology of the cuspidal curve $k[x,y]/(x^2 - y^3)$

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