Timeline for T^1 functors and Ext^1 in deformation theory
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
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| Aug 6, 2013 at 15:08 | answer | added | Srks | timeline score: 1 | |
| Jun 28, 2012 at 16:14 | comment | added | HNuer | @J.C. Ottem: The second part is in fact an exercise there, but I'm asking how to finish it. I just don't know how to get the unlocalized claim from what I've explained so far. As for the first question, do you know on what page it's explained? From another exercise there, I know that the global deformation functor T^1 fits in the same spot in a 4-term exact sequence (see p. 42, exercise 5.8) as Ext^1(\Omega,O_X) does in the s.e.s. coming from the local-to-global spectral sequence. But does this necessarily mean they're isomorphic? A priori the maps might be different. Let me know, thanks | |
| Jun 28, 2012 at 15:36 | comment | added | J.C. Ottem | This is explained in Hartshorne's book on deformation theory. | |
| Jun 28, 2012 at 15:01 | history | asked | HNuer | CC BY-SA 3.0 |