Question

What does $S^2$ denote in category theory?

score 85 · Answer 1 · 2026-03-25 01:35:34

85

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What does $S^2$ denote in category theory?

Published on 25 Mar 2026 - 1:35

score 52 · Answer 2 · 2018-05-30 19:32:36

52

Views

When drawing a category, is it reasonable to imply composition?

Published on 30 May 2018 - 19:32

score 57 · Answer 3 · 2018-05-30 21:20:43

57

Views

What is it called when you have a span with more than two legs?

Published on 30 May 2018 - 21:20

score 118 · Answer 4 · 2018-05-30 23:38:31

118

Views

The Yoneda embedding induces a monad-like structure?

Published on 30 May 2018 - 23:38

score 148 · Answer 5 · 2018-05-31 05:42:17

148

Views

Is it true that $F$ is left-adjoint to $U$ in at most one way?

Published on 31 May 2018 - 5:42

score 1.3k · Answer 6 · 2026-03-26 09:37:32

1.3k

Views

What is the frobenius map really?

Published on 26 Mar 2026 - 9:37

score 614 · Answer 7 · 2026-03-25 01:38:31

614

Views

Vanishing of $\varprojlim^1$ on Mittag-Leffler sequences story.

Published on 25 Mar 2026 - 1:38

score 327 · Answer 8 · 2018-05-31 18:06:16

327

Views

In which Category Inverse Limit does not exist?

Published on 31 May 2018 - 18:06

score 62 · Answer 9 · 2018-06-01 09:19:13

62

Views

Is there a special name for a category with all morphisms being morphisms from an initial object?

Published on 01 Jun 2018 - 9:19

score 42 · Answer 10 · 2026-03-26 15:17:21

42

Views

Does the notation $G \in \mathrm{Grp} \cap T_0$ for a $T_0$ topological group make sense?

Published on 26 Mar 2026 - 15:17

score 188 · Answer 11 · 2026-03-26 07:58:58

188

Views

What if domains and codomains in categories were not unique?

Published on 26 Mar 2026 - 7:58

score 124 · Answer 12 · 2018-06-02 19:11:08

124

Views

Is a topological category a Grothendieck site?

Published on 02 Jun 2018 - 19:11

score 99 · Answer 13 · 2026-03-25 00:07:55

99

Views

Why is $\lim: \operatorname{Fun}(I, C) \rightarrow C, \alpha \mapsto \lim(\alpha)$ a functor?

Published on 25 Mar 2026 - 0:07

score 154 · Answer 14 · 2018-06-03 10:05:43

154

Views

Exercise about map of graph in "Conceptual Mathematics"

Published on 03 Jun 2018 - 10:05

score 82 · Answer 15 · 2018-06-03 19:14:33

82

Views

Additive Functors preserve Null Sequences

Published on 03 Jun 2018 - 19:14

List Question

What does $S^2$ denote in category theory?

When drawing a category, is it reasonable to imply composition?

What is it called when you have a span with more than two legs?

The Yoneda embedding induces a monad-like structure?

Is it true that $F$ is left-adjoint to $U$ in at most one way?

What is the frobenius map really?

Vanishing of $\varprojlim^1$ on Mittag-Leffler sequences story.

In which Category Inverse Limit does not exist?

Is there a special name for a category with all morphisms being morphisms from an initial object?

Does the notation $G \in \mathrm{Grp} \cap T_0$ for a $T_0$ topological group make sense?

What if domains and codomains in categories were not unique?

Is a topological category a Grothendieck site?

Why is $\lim: \operatorname{Fun}(I, C) \rightarrow C, \alpha \mapsto \lim(\alpha)$ a functor?

Exercise about map of graph in "Conceptual Mathematics"

Additive Functors preserve Null Sequences

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