The Stacks project

Definition 100.36.1. Let $f : \mathcal{X} \to \mathcal{Y}$ be a morphism of algebraic stacks. We say $f$ is unramified if $f$ is DM and the equivalent conditions of Lemma 100.34.1 hold with $\mathcal{P} =$“unramified”.

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View Definition 100.36.1 as pdf