Timeline for Does the Čech cohomology always yield long exact sequences from short ones?
Current License: CC BY-SA 3.0
9 events
| when toggle format | what | by | license | comment | |
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| Feb 26, 2013 at 8:25 | comment | added | Mikhail Bondarko | Cech cohomology yields a 'nice' cohomology theory if all the (multiple) intersections of the components of your covering have trivial cohomology (this is also true if you consider a limit of coverings). If you have a weird topological space, then you cannot achieve this condition; then you need hypercoverings. | |
| Feb 26, 2013 at 8:17 | vote | accept | HeWhoHungers | ||
| Feb 26, 2013 at 4:15 | comment | added | Włodzimierz Holsztyński | "Čehov cohomology" sounded interesting too. | |
| Feb 25, 2013 at 20:59 | answer | added | Donu Arapura | timeline score: 7 | |
| Feb 25, 2013 at 20:32 | comment | added | HeWhoHungers | Thank you both for your hasty corrections - indeed it was Čech cohomology that I had in mind and it was little but stupidity that led me to write otherwise. | |
| Feb 25, 2013 at 20:24 | comment | added | Andrej Bauer | He means Čech cohomology, I am quite sure as this is a student who was in my office today. I suggested he asks here. I edited the question to fix the terminology. | |
| Feb 25, 2013 at 20:23 | history | edited | Andrej Bauer | CC BY-SA 3.0 |
added 1 characters in body; edited title; added 1 characters in body; edited title; deleted 6 characters in body
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| Feb 25, 2013 at 20:11 | comment | added | user9072 | Searching for "Čehov cohomology" turns up this question and nothing else. This is not my field so it is hard to judge but perhaps some clarification what this is could be appropriate. (Or do you mean "Čech cohomology"?) | |
| Feb 25, 2013 at 19:47 | history | asked | HeWhoHungers | CC BY-SA 3.0 |