Lemma 100.9.3. Compositions of immersions of algebraic stacks are immersions. Similarly for closed immersions and open immersions.
Lemma 100.9.3. Compositions of immersions of algebraic stacks are immersions. Similarly for closed immersions and open immersions.
Proof. This follows from the general discussion in Section 100.3 and Spaces, Lemma 65.12.2. \square
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