Lemma 39.17.3. Let $S$ be a scheme. Let $(U, R, s, t, c)$ be a groupoid over $S$, and let $G/U$ be its stabilizer. Denote $R_ t/U$ the scheme $R$ seen as a scheme over $U$ via the morphism $t : R \to U$. There is a canonical left action

induced by the composition law $c$.

## Comments (0)