Timeline for What is a section?
Current License: CC BY-SA 2.5
3 events
| when toggle format | what | by | license | comment | |
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| Dec 7, 2009 at 3:57 | comment | added | Deane Yang | I do? I'm a differential geometer, so I've been able to survive even though I can't remember precisely the difference between a presheaf and a sheaf. And I have no idea what an "adjunction" is. But I am curious. Any chance you or someone else would care to elaborate on this comment, maybe using more old-fashioned mathematical English? | |
| Dec 6, 2009 at 22:52 | comment | added | Harry Gindi | Of course, you must keep in mind that presheaves-bundles is only an adjunction, and the actual equivalence of categories happens only when we restrict to sheaves and "etale" bundles, as Mac Lane calls them. | |
| Dec 6, 2009 at 22:27 | history | answered | Deane Yang | CC BY-SA 2.5 |