Timeline for Classification of Tori of GL2, up to conjugation
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Feb 17, 2013 at 10:29 | comment | added | user28172 | The $H^1(k,X)$ in this answer should be $H^1(k,{\rm{Aut}}_{X/k})$ (and one should note the relevance of projectivity hypotheses to ensure effectivity of descent, unless "object" is understood in some sense like algebraic spaces). | |
| Feb 17, 2013 at 9:59 | vote | accept | Jérémy Blanc | ||
| Feb 17, 2013 at 6:04 | comment | added | Will Sawin | Does this suffice? | |
| Feb 17, 2013 at 6:03 | history | edited | Will Sawin | CC BY-SA 3.0 |
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| Feb 17, 2013 at 0:44 | comment | added | Jérémy Blanc | Thx. By "precise description" I really meant something precise, like diagonal tori or matrices of the form [a,b*mu, b,a], with some conditions on a,b. | |
| Feb 16, 2013 at 14:26 | comment | added | Ben Webster♦ | Yes, the description is in Aakumadula's comment above. | |
| Feb 16, 2013 at 11:01 | comment | added | Jérémy Blanc | Thx Will. So in my case I have just GL_2(Z), which is Z/2Z. Does this helps to get a precise description of the tori? | |
| Feb 16, 2013 at 6:44 | history | answered | Will Sawin | CC BY-SA 3.0 |