Definition 91.18.1. Let $\mathcal{C}$ be a site. Let $\mathcal{A} \to \mathcal{B}$ be a homomorphism of sheaves of rings on $\mathcal{C}$. The *standard resolution of $\mathcal{B}$ over $\mathcal{A}$* is the augmentation $\epsilon : \mathcal{P}_\bullet \to \mathcal{B}$ with terms

and maps as constructed above.

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