Definition 4.3.2 (001N)—The Stacks project

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Table of contents
Part 1: Preliminaries
Chapter 4: Categories
Section 4.3: Opposite Categories and the Yoneda Lemma
Definition 4.3.2 (cite)

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Definition 4.3.2. Let $\mathcal{C}$ , $\mathcal{S}$ be categories. A contravariant functor $F$ from $\mathcal{C}$ to $\mathcal{S}$ is a functor $\mathcal{C}^{opp}\to \mathcal{S}$ .

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