List questions from category-theory

Published on 11 Apr 2026 - 12:53

166

Views

Understanding a Fact About Universal Arrows from Comma Categories

Published on 11 Apr 2026 - 15:58

764

Views

Does faithful additive functor between abelian categories reflect short exact sequence?

Published on 15 Apr 2026 - 9:48

180

Views

Does $\text{RHom}_{\mathcal C}$ exist when $\mathcal C$ is the category of finite abelian groups?

Published on 11 May 2026 - 7:49

72

Views

Equivalence of over categories induced by equivalence

Published on 14 Apr 2026 - 1:11

624

Views

Complete categories are cocomplete?

Published on 15 Apr 2026 - 19:07

90

Views

Monic arrows as subobjects

Published on 14 Apr 2026 - 17:54

78

Views

Extensions of groups, Lie algebras etc.

Published on 13 Apr 2026 - 23:11

61

Views

Question Involving Universal Elements

Published on 14 Apr 2026 - 6:47

82

Views

Reduction of $\lambda$-directed colimits

Published on 12 Apr 2026 - 20:20

118

Views

Geometric morphisms between presheaves

Published on 11 Apr 2026 - 9:44

222

Views

When dealing with tensor products, is it necessary to check the morphisms are well defined?

Published on 12 Apr 2026 - 6:57

711

Views

Direct limit isomorphism

Published on 12 Apr 2026 - 1:34

791

Views

pullback of kernel is kernel

Published on 08 Apr 2026 - 19:03

53

Views

In what sense is the kernel of a group homomorphism a universal?

Published on 10 Apr 2026 - 18:07

List Question

Are Euclidean vector spaces natural isomorphic to their duals?

Understanding a Fact About Universal Arrows from Comma Categories

Does faithful additive functor between abelian categories reflect short exact sequence?

Does $\text{RHom}_{\mathcal C}$ exist when $\mathcal C$ is the category of finite abelian groups?

Equivalence of over categories induced by equivalence

Complete categories are cocomplete?

Monic arrows as subobjects

Extensions of groups, Lie algebras etc.

Question Involving Universal Elements

Reduction of $\lambda$-directed colimits

Geometric morphisms between presheaves

When dealing with tensor products, is it necessary to check the morphisms are well defined?

Direct limit isomorphism

pullback of kernel is kernel

In what sense is the kernel of a group homomorphism a universal?

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