Structure

Implication details

Claim: If a category is concretizable, then it is locally essentially small.

Proof: If U:C→SetU : \C \to \Set is a faithful functor, for every pair of objects A,BA,B, the collection Hom⁡(A,B)\Hom(A,B) embeds into the set Hom⁡(U(A),U(B))\Hom(U(A),U(B)), so that it is essentially small.
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