Question

How should you think about cogroups intuitively?

score 223 · Answer 1 · 2026-04-09 09:40:36

223

Views

How should you think about cogroups intuitively?

Published on 09 Apr 2026 - 9:40

score 51 · Answer 2 · 2026-05-10 16:34:36

51

Views

Adjunction between the category of operads under $P$ and $(P,P)$-bimodules

Published on 10 May 2026 - 16:34

score 149 · Answer 3 · 2026-04-13 12:37:19

149

Views

How is a full and faithful functor necessarily injective on objects up to isomorphism?

Published on 13 Apr 2026 - 12:37

score 46 · Answer 4 · 2026-04-13 04:21:05

46

Views

Question about a property of equivalence relations when showing an induced map is well-defined in questions concerning proof of coequalizers

Published on 13 Apr 2026 - 4:21

score 96 · Answer 5 · 2026-04-14 22:06:09

96

Views

Uniqueness of maps imply a map is the needed one

Published on 14 Apr 2026 - 22:06

score 192 · Answer 6 · 2026-04-16 02:03:43

192

Views

Exercise 1.1.3.12 on Kerodon

Published on 16 Apr 2026 - 2:03

score 132 · Answer 7 · 2023-06-19 15:32:13

132

Views

Understanding a proof of Ken Brown's lemma

Published on 19 Jun 2023 - 15:32

score 133 · Answer 8 · 2026-04-11 10:28:45

133

Views

different notions of functor products

Published on 11 Apr 2026 - 10:28

score 277 · Answer 9 · 2026-04-12 06:49:12

277

Views

Indexed Yoneda in the Elephant

Published on 12 Apr 2026 - 6:49

score 51 · Answer 10 · 2026-04-11 17:02:03

51

Views

Pullback along a family of maps

Published on 11 Apr 2026 - 17:02

score 23 · Answer 11 · 2026-05-04 20:11:06

23

Views

Relationship between identity morphisms, zero morphisms and zero elements in preadditive category

Published on 04 May 2026 - 20:11

score 84 · Answer 12 · 2026-04-14 21:27:20

84

Views

On any category $\mathscr C$, any two additive structures are necessarily isomorphic.

Published on 14 Apr 2026 - 21:27

score 33 · Answer 13 · 2026-04-16 10:47:59

33

Views

The Borel sigma algebra on a set $X$ is always a boolean algebra? (With union, intersection and set complementation)

Published on 16 Apr 2026 - 10:47

score 51 · Answer 14 · 2026-05-05 01:13:41

51

Views

Constructing a model structure out of two models structures, and finding Quillen pairs

Published on 05 May 2026 - 1:13

score 85 · Answer 15 · 2026-04-17 12:39:54

85

Views

Versions of Choice in categories

Published on 17 Apr 2026 - 12:39

List Question

How should you think about cogroups intuitively?

Adjunction between the category of operads under $P$ and $(P,P)$-bimodules

How is a full and faithful functor necessarily injective on objects up to isomorphism?

Question about a property of equivalence relations when showing an induced map is well-defined in questions concerning proof of coequalizers

Uniqueness of maps imply a map is the needed one

Exercise 1.1.3.12 on Kerodon

Understanding a proof of Ken Brown's lemma

different notions of functor products

Indexed Yoneda in the Elephant

Pullback along a family of maps

Relationship between identity morphisms, zero morphisms and zero elements in preadditive category

On any category $\mathscr C$, any two additive structures are necessarily isomorphic.

The Borel sigma algebra on a set $X$ is always a boolean algebra? (With union, intersection and set complementation)

Constructing a model structure out of two models structures, and finding Quillen pairs

Versions of Choice in categories

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