Timeline for Condition to ensure that the product of closed maps be closed
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 11, 2012 at 0:53 | history | edited | David White | CC BY-SA 3.0 |
added 11 characters in body
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| Apr 10, 2012 at 19:54 | answer | added | Ramiro de la Vega | timeline score: 2 | |
| Apr 10, 2012 at 17:47 | answer | added | Ronnie Brown | timeline score: 10 | |
| Apr 10, 2012 at 17:46 | comment | added | Marc Hoyois | According to Remark 7.3.1.15 in Higher Topos Theory, a sufficient conditition is that the fibers of $f_i$ are compact (not necessarily Hausdorff). In fact this is equivalent to $f_i$ being universally closed, and by abstract nonsense a finite product of universally closed maps is universally closed. | |
| Apr 10, 2012 at 16:32 | history | asked | Richard Bonne | CC BY-SA 3.0 |