Timeline for How should one think about sheafification and the difference between a sheaf and a presheaf
Current License: CC BY-SA 2.5
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 5, 2015 at 13:48 | answer | added | Thomas | timeline score: 5 | |
| Sep 17, 2015 at 1:00 | answer | added | user13113 | timeline score: 3 | |
| Nov 9, 2010 at 11:19 | vote | accept | roger123 | ||
| Nov 8, 2010 at 19:46 | answer | added | roy smith | timeline score: 6 | |
| Nov 8, 2010 at 5:11 | answer | added | Steven Gubkin | timeline score: 24 | |
| Nov 7, 2010 at 22:27 | answer | added | Todd Trimble | timeline score: 23 | |
| Nov 7, 2010 at 22:04 | comment | added | Sándor Kovács | Donu, good point about presheaves. Perhaps that's why people feel that presheaves are easy and sheaves are hard. :) | |
| Nov 7, 2010 at 21:59 | comment | added | Donu Arapura | I realize you're asking for insight, but the precise meaning of your questions aren't that clear to me. So let me give a vague sort of answer: sheaves and their properties are local, presheaves aren't. You don't even need a topology to say what a presheaf is. | |
| Nov 7, 2010 at 21:55 | answer | added | Sándor Kovács | timeline score: 5 | |
| Nov 7, 2010 at 21:49 | answer | added | Greg Muller | timeline score: 105 | |
| Nov 7, 2010 at 21:48 | answer | added | Martin Brandenburg | timeline score: 12 | |
| Nov 7, 2010 at 21:12 | history | asked | roger123 | CC BY-SA 2.5 |