Timeline for Cohomology without comonad?
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Nov 24, 2021 at 20:29 | history | edited | Student | CC BY-SA 4.0 |
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| Nov 19, 2020 at 20:38 | comment | added | Qiaochu Yuan | Well, how about K-theory then? | |
| Nov 19, 2020 at 20:08 | history | edited | Student | CC BY-SA 4.0 |
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| Nov 19, 2020 at 20:06 | comment | added | Student | It seems by the adjunction functor theorem, many meaningful functors are adjoints naturally. Leave alone cohomologies! This is non-rigorous I know. I mentioned it just to strengthen my doubt. | |
| Nov 19, 2020 at 20:02 | review | Close votes | |||
| Nov 20, 2020 at 2:27 | |||||
| Nov 19, 2020 at 19:54 | comment | added | მამუკა ჯიბლაძე | Godement resolution for computing sheaf cohomology can be viewed as coming from a particular adjunction, hence from a comonad. To give an example of some cohomology not coming from a comonad you have to come up with meaningful right derived functors of a functor which does not have an adjoint. There must be such examples except I cannot think of any right now | |
| Nov 19, 2020 at 19:35 | history | edited | Student | CC BY-SA 4.0 |
better title
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| Nov 19, 2020 at 18:10 | history | edited | Student | CC BY-SA 4.0 |
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| Nov 19, 2020 at 18:10 | comment | added | Student | I don't know much really.. isn't it a comonad cohomology in some way? | |
| Nov 19, 2020 at 18:09 | comment | added | Qiaochu Yuan | How about singular cohomology? | |
| Nov 19, 2020 at 18:06 | history | asked | Student | CC BY-SA 4.0 |