Definition 94.16.5. Let $\mathcal{X}$ be an algebraic stack over $S$. A presentation of $\mathcal{X}$ is given by a smooth groupoid $(U, R, s, t, c)$ in algebraic spaces over $S$, and an equivalence $f : [U/R] \to \mathcal{X}$.
Definition 94.16.5. Let $\mathcal{X}$ be an algebraic stack over $S$. A presentation of $\mathcal{X}$ is given by a smooth groupoid $(U, R, s, t, c)$ in algebraic spaces over $S$, and an equivalence $f : [U/R] \to \mathcal{X}$.
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