Definition 64.14.4. Notation $U \to S$, $G$, $R$ as in Lemma 64.14.3. If the action of $G$ on $U$ satisfies $(*)$ we say $G$ acts freely on the scheme $U$. In this case the algebraic space $U/R$ is denoted $U/G$ and is called the quotient of $U$ by $G$.
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