Question

A (higher) categorical approach to representation theory

score 501 · Answer 1 · 2026-03-31 12:49:05

501

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A (higher) categorical approach to representation theory

Published on 31 Mar 2026 - 12:49

score 57 · Answer 2 · 2026-04-10 18:42:53

57

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Trouble Understanding a Proof on Categorical Equivalence

Published on 10 Apr 2026 - 18:42

score 83 · Answer 3 · 2026-04-14 14:04:34

83

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Hom-Functors and Sets

Published on 14 Apr 2026 - 14:04

score 1.7k · Answer 4 · 2026-04-09 21:00:41

1.7k

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Are Fully Faithful Functors Injective?

Published on 09 Apr 2026 - 21:00

score 241 · Answer 5 · 2026-04-14 22:30:18

241

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Bijection from functions $X\times Y\to Z$ to functions $X\to Z^Y$

Published on 14 Apr 2026 - 22:30

score 132 · Answer 6 · 2026-04-14 22:02:54

132

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Let $\mathcal{D}$ be an additive category, and $f$ a morphism that is both monic and epic. Must $f$ be an isomorphism?

Published on 14 Apr 2026 - 22:02

score 198 · Answer 7 · 2026-04-17 13:04:51

198

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Map from free product $G*G$ to $G$

Published on 17 Apr 2026 - 13:04

score 749 · Answer 8 · 2026-04-15 13:13:25

749

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What is this commutative diagram for continuity?

Published on 15 Apr 2026 - 13:13

score 64 · Answer 9 · 2026-04-14 08:07:59

64

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Class of weak equivalences contains the isomorphisms.

Published on 14 Apr 2026 - 8:07

score 73 · Answer 10 · 2026-04-12 21:35:37

73

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$R-Mod$ is symmetric monoidal

Published on 12 Apr 2026 - 21:35

score 102 · Answer 11 · 2026-04-09 07:40:11

102

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Is there an easy-to-define class of maps of topological spaces that is not closed under composition?

Published on 09 Apr 2026 - 7:40

score 114 · Answer 12 · 2026-04-13 01:24:49

114

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functions as arrow in a cathegory with more complex objects

Published on 13 Apr 2026 - 1:24

score 107 · Answer 13 · 2026-04-17 05:00:05

107

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Why is the category $Elts(F)$ complete and the forgetful functor $\phi_F:Elts(F)\rightarrow \mathscr{C}$ limit preserving?

Published on 17 Apr 2026 - 5:00

score 168 · Answer 14 · 2026-04-12 08:25:02

168

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How to Proof Top is a subcategory of $Top^2$?

Published on 12 Apr 2026 - 8:25

score 264 · Answer 15 · 2026-04-09 10:26:44

264

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Action of group object

Published on 09 Apr 2026 - 10:26

List Question

A (higher) categorical approach to representation theory

Trouble Understanding a Proof on Categorical Equivalence

Hom-Functors and Sets

Are Fully Faithful Functors Injective?

Bijection from functions $X\times Y\to Z$ to functions $X\to Z^Y$

Let $\mathcal{D}$ be an additive category, and $f$ a morphism that is both monic and epic. Must $f$ be an isomorphism?

Map from free product $G*G$ to $G$

What is this commutative diagram for continuity?

Class of weak equivalences contains the isomorphisms.

$R-Mod$ is symmetric monoidal

Is there an easy-to-define class of maps of topological spaces that is not closed under composition?

functions as arrow in a cathegory with more complex objects

Why is the category $Elts(F)$ complete and the forgetful functor $\phi_F:Elts(F)\rightarrow \mathscr{C}$ limit preserving?

How to Proof Top is a subcategory of $Top^2$?

Action of group object

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