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Timeline for Why do sheaves embed in presheaves?

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Dec 1, 2017 at 19:07 comment added Tim Campion I've always found it similarly striking that the free completion of $C$ under $J$-colimits for some class $J$ of small diagrams is always computed as a full subcategory of the category of presheaves on $C$, namely the closure of the representables under $J$-colimits.
Dec 1, 2017 at 10:22 answer added Simon Henry timeline score: 5
Dec 1, 2017 at 6:44 vote accept eon
Dec 1, 2017 at 6:32 answer added Qiaochu Yuan timeline score: 8
Dec 1, 2017 at 6:30 comment added David Roberts The adjoint functor theorem...
Dec 1, 2017 at 1:42 comment added Yosemite Sam Is it easy to see from this point of view that PSh ---> Sh is a localization? In the sense that there is an adjoint which is fully faithful (there might even be a slicker way of phrasing this).
Nov 30, 2017 at 23:43 review First posts
Dec 1, 2017 at 0:02
Nov 30, 2017 at 23:43 history asked eon CC BY-SA 3.0