Timeline for Cobordism invariants: topological v.s. geometric
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 29, 2020 at 1:15 | vote | accept | Borromean | ||
| Mar 26, 2020 at 4:29 | comment | added | Borromean | @MikeMiller Thank you! I have added the definitions. | |
| Mar 26, 2020 at 4:22 | history | edited | Borromean | CC BY-SA 4.0 |
added 470 characters in body
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| Mar 25, 2020 at 23:46 | history | became hot network question | |||
| Mar 25, 2020 at 21:01 | answer | added | Arun Debray | timeline score: 8 | |
| Mar 25, 2020 at 18:50 | review | Close votes | |||
| Mar 25, 2020 at 21:15 | |||||
| Mar 25, 2020 at 18:18 | comment | added | mme | Can you give precise definitions to "a cobordism invariant is topological", resp "geometric"? To me some invariant associated to a manifold with extra structure is topological if it depends on little more than the smooth structure, eg an invariant of spin manifolds might be called topological because there are finitely many spin structures on a given smooth manifold. That the $\eta$ invariant of index theory normally depends on structure like the metric/connection just says to me that your $\Bbb Z/16$-valued $\eta$ extracts topological information from a normally geometric object. | |
| Mar 25, 2020 at 15:45 | history | asked | Borromean | CC BY-SA 4.0 |