Timeline for affine open subset of affine scheme
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 15, 2013 at 7:29 | answer | added | Al-Amrani | timeline score: 0 | |
| S Jun 14, 2013 at 9:56 | vote | accept | vdm123 | ||
| S Jun 14, 2013 at 9:56 | vote | accept | vdm123 | ||
| S Jun 14, 2013 at 9:56 | |||||
| Jun 13, 2013 at 18:27 | comment | added | Al-Amrani | Three years ago , such a question was asked as follows (see : mathoverflow.net/questions/20782) : "Given a commutative ring A, is there a "ring-theoretic" characterization of the ring homomorphisms A→B that realize Spec(B) as an open affine subscheme of Spec(A) (more precisely, those morphisms such that the induced map Spec(B)→Spec(A) is an open immersion)?" That is the true meaning of the problem ! In Grothendieck's EGA, I myself found nothing. I shall soon ask one of his students ! | |
| Jun 12, 2013 at 16:07 | vote | accept | vdm123 | ||
| S Jun 14, 2013 at 9:56 | |||||
| Jun 12, 2013 at 9:30 | comment | added | Dan Petersen | The answers to this question: mathoverflow.net/questions/20782 gives a few correct results in the direction you're asking for. | |
| Jun 12, 2013 at 8:41 | answer | added | pinaki | timeline score: 20 | |
| Jun 12, 2013 at 7:50 | history | asked | vdm123 | CC BY-SA 3.0 |