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Presheaves and free cocompletion (part 2)

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If you have a question about this talk, please contact Nathanael Arkor.

You may have heard that the category of presheaves over a small category C is the free cocompletion of C. But what do functors from C^op to Set have to do with freely adding colimits to C? That’s what we will investigate in this informal talk.

This talk is part of the Logic & Semantics for Dummies series.

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