Timeline for Periodicity theorems in (generalized) cohomology theories
Current License: CC BY-SA 2.5
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Aug 15, 2017 at 12:28 | comment | added | Sean Tilson | The assertion that cohomology theories constructed by the Landweber Exact Functor theorem are periodic. This isn't true. To use the LEFT you need a genus... Does this clarify what I meant? | |
| Aug 13, 2017 at 19:22 | comment | added | მამუკა ჯიბლაძე | @SeanTilson Well it is now my turn to become confused. Where exactly is this said (implicitly)? | |
| Aug 13, 2017 at 17:39 | comment | added | Sean Tilson | Yes, I am not confused about that. I am confused as to why it is said above that there are no such examples (implicitly). | |
| Aug 12, 2017 at 22:44 | comment | added | მამუკა ჯიბლაძე | @SeanTilson My comment was supposed to give an example of a non-periodic one: namely, complex cobordism. | |
| Aug 12, 2017 at 19:55 | comment | added | Sean Tilson | @მამუკაჯიბლაძე I am confused by your response. I don't think all genera should lead to periodic theories. | |
| Aug 4, 2017 at 0:20 | comment | added | მამუკა ჯიბლაძე | @SeanTilson There is e. g. the "tautological" genus with values in the Lazard ring. | |
| Aug 8, 2010 at 18:38 | comment | added | Sean Tilson | Is this really the case? all genera lead to periodic theories? | |
| Jul 17, 2010 at 17:33 | history | answered | user19475 | CC BY-SA 2.5 |