Search Results
| Search type | Search syntax |
|---|---|
| Tags | [tag] |
| Exact | "words here" |
| Author |
user:1234 user:me (yours) |
| Score |
score:3 (3+) score:0 (none) |
| Answers |
answers:3 (3+) answers:0 (none) isaccepted:yes hasaccepted:no inquestion:1234 |
| Views | views:250 |
| Code | code:"if (foo != bar)" |
| Sections |
title:apples body:"apples oranges" |
| URL | url:"*.example.com" |
| Saves | in:saves |
| Status |
closed:yes duplicate:no migrated:no wiki:no |
| Types |
is:question is:answer |
| Exclude |
-[tag] -apples |
| For more details on advanced search visit our help page | |
Results tagged with ct.category-theory
Search options not deleted
user 124190
Enriched categories, topoi, abelian categories, monoidal categories, homological algebra.
2
votes
1
answer
659
views
How to define 0-sphere in a category with zero object?
The 0-sphere $S^0$ is the coproduct of two points,
$$S^0 \simeq \ast \sqcup \ast$$
How to define 0-sphere in a category with zero object?
Let $\mathcal{C}$ be a category. A cylinder, $\mathbf{I}$, on …
- 48.8k
5
votes
2
answers
1k
views
Suspensions are H-cogroup objects
Do you know any reference where you have a formal justification for the following statement that appears in nLab?
https://ncatlab.org/nlab/show/suspensions+are+H-cogroup+objects
"Let $\mathcal{C}$ b …
- 16.5k