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 sites
Search options questions only
not deleted
user 402
For questions related to the mathematical notion of site, which among others generalizes the notion of topological space. For questions on internet-sites, use online-resources, but note that these questions need to be very specific to research-level mathematics to be on-topic.
5
votes
0
answers
428
views
Examples of nonstable ∞-categories in which sifted colimits commute with finite limits
What are some natural examples (if any) of nonstable ∞-categories in which finite limits commute with sifted colimits (or rather just colimits over Δ^op)?
Stable ∞-categories do satisfy this property …
- 37.8k
7
votes
0
answers
359
views
What is a morphism of ∞-sites?
If both sites have finite limits, then covering-flat functors are precisely the functors that preserve finite limits.
What is the analogue of this story for ∞-sites? … What is a covering-flat functor between ∞-sites?
If both ∞-sites admit finite ∞-limits, then covering-flat functors could be defined
as finite ∞-limit preserving functors. …
- 37.8k
7
votes
1
answer
343
views
Which dense inclusions of sites are ∞-dense?
As it turns out, in the 1-categorical case we have an ample supply of dense inclusions of sites,
as explained by Proposition C2.2.16 of Johnstone's Sketches of an Elephant:
essentially small sites of definition … What additional conditions are needed to ensure that a dense inclusion of sites is ∞-dense? …
- 37.8k