Timeline for Motivation/intuition behind the definition of delta-functors and related concepts
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 19, 2019 at 2:22 | vote | accept | Dat Minh Ha | ||
| Aug 19, 2019 at 2:22 | vote | accept | Dat Minh Ha | ||
| Aug 19, 2019 at 2:22 | |||||
| Aug 19, 2019 at 2:22 | vote | accept | Dat Minh Ha | ||
| Aug 19, 2019 at 2:22 | |||||
| Aug 14, 2019 at 16:22 | answer | added | Donu Arapura | timeline score: 7 | |
| Aug 14, 2019 at 15:21 | answer | added | Giorgio Mossa | timeline score: 5 | |
| Aug 14, 2019 at 15:07 | comment | added | Dat Minh Ha | @GiorgioMossa I'd like to know how this universal property/universality is useful geometrically in say, sheaf cohomology. Also, apologies for my previous comment. For a brief moment it just said "From Wikipedia" because I accidentally pressed Enter before finishing typing. | |
| Aug 14, 2019 at 15:03 | comment | added | Giorgio Mossa | @DatMinhHa ah, perfect thanks. | |
| Aug 14, 2019 at 15:01 | comment | added | Dat Minh Ha | @GiorgioMossa From Wikipedia: en.wikipedia.org/wiki/Delta-functor#Universal_%CE%B4-functor. | |
| Aug 14, 2019 at 14:44 | comment | added | Giorgio Mossa | What do you mean by universality of $\delta$-functors? | |
| Aug 14, 2019 at 7:11 | comment | added | Dat Minh Ha | @PraphullaKoushik Let's say in the context of sheaf cohomology. What then do these functors mean ? | |
| Aug 14, 2019 at 5:44 | comment | added | Praphulla Koushik | I don't know if it is ok to ask about geometry when all you have is some collection of functors on some abelian categories... Maybe you can fix some category that might have geometric meaning and then you can ask if $\delta$-functor means anything in that category... | |
| Aug 14, 2019 at 5:40 | history | edited | András Bátkai | CC BY-SA 4.0 |
added math.se link
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| Aug 14, 2019 at 4:55 | review | Close votes | |||
| Aug 20, 2019 at 3:05 | |||||
| Aug 14, 2019 at 4:05 | review | First posts | |||
| Aug 14, 2019 at 5:40 | |||||
| Aug 14, 2019 at 4:00 | history | asked | Dat Minh Ha | CC BY-SA 4.0 |