Timeline for Union of closed subschemes with the structure sheaf over it
Current License: CC BY-SA 2.5
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 21, 2010 at 22:03 | comment | added | Emerton | Dear 7-adic, it is not just a question of loving reduced schemes. See my answer below for an elaboration. | |
| Mar 21, 2010 at 18:53 | vote | accept | 7-adic | ||
| Mar 21, 2010 at 18:53 | |||||
| Mar 21, 2010 at 18:51 | comment | added | 7-adic | Thanks for your answer. I guess that the following fact makes the $I\cap J$ better: $R/I\cap J$ is reduced if both $R/I$ and $R/J$ are reduced. We 'love' reduced scheme more than non-reduced scheme. | |
| Mar 21, 2010 at 15:44 | history | answered | Georges Elencwajg | CC BY-SA 2.5 |