Implication Details

Claim: If a category is Grothendieck abelian and is locally essentially small, then it is locally presentable.

Proof: See Deriving Auslander's formula, Cor. 5.2, or Sheafifiable homotopy model categories, Prop. 3.10.

Remark: The assumption that the category is locally essentially small is necessary (and is implicit in most of the literature), as the example AbI\Ab^I for large II shows (see here).

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