List questions from category-theory

Published on 05 Apr 2026 - 20:14

108

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Not getting example to fit Yoneda

Published on 31 Mar 2026 - 16:32

37

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Hands-on definition of cotorsion quotient

Published on 21 Mar 2026 - 11:11

48

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Universal characterization of $\mu^*$-measurable sets / Galois connection between measures and outer measures?

Published on 13 Apr 2026 - 6:23

221

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FInitary functors-a definition

Published on 25 Mar 2026 - 19:28

142

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Does categorical equivalence commute with colimit?

Published on 27 Mar 2026 - 8:41

251

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Homotopy category is not Abelian.

Published on 13 Apr 2026 - 12:31

49

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Suppose $F,G$ are adjoint functors with $\text{Hom}(FX,Y)\cong \text{Hom}(X,GY)$. If $\phi:FX\to Y$ surjection, what about $\phi':X\to GY$?

Published on 10 Oct 2019 - 23:37

269

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What is a C-Monoid?

Published on 12 Apr 2026 - 4:39

233

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A cochain complex with finitely generated cohomology is quasi-isomorphic to a cochain complex of finitely generated module

Published on 03 Apr 2026 - 20:36

55

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Is a tensor product of subquotients a subquotient of the tensor product?

Published on 13 Apr 2026 - 22:23

259

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Why is the Yoneda embedding continuous?

Published on 09 Apr 2026 - 4:59

301

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Is the product of two abelian categories also abelian?

Published on 12 Apr 2026 - 7:05

74

Views

If $X$ is path connected, $\pi(X,x)\cong\pi(X,y)\ \forall x,y\in X$: a categorical intepretation

Published on 27 Mar 2026 - 7:50

445

Views

equivalent categories, $\operatorname{FinVect}_K$

Published on 13 Oct 2019 - 11:10

List Question

Apply the Lemma of Yoneda

Not getting example to fit Yoneda

Hands-on definition of cotorsion quotient

Universal characterization of $\mu^*$-measurable sets / Galois connection between measures and outer measures?

FInitary functors-a definition

Does categorical equivalence commute with colimit?

Homotopy category is not Abelian.

Suppose $F,G$ are adjoint functors with $\text{Hom}(FX,Y)\cong \text{Hom}(X,GY)$. If $\phi:FX\to Y$ surjection, what about $\phi':X\to GY$?

What is a C-Monoid?

A cochain complex with finitely generated cohomology is quasi-isomorphic to a cochain complex of finitely generated module

Is a tensor product of subquotients a subquotient of the tensor product?

Why is the Yoneda embedding continuous?

Is the product of two abelian categories also abelian?

If $X$ is path connected, $\pi(X,x)\cong\pi(X,y)\ \forall x,y\in X$: a categorical intepretation

equivalent categories, $\operatorname{FinVect}_K$

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