Lemma 101.25.3 (06PY)—The Stacks project

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Table of contents
Part 7: Algebraic Stacks
Chapter 101: Morphisms of Algebraic Stacks
Section 101.25: Flat morphisms
Lemma 101.25.3 (cite)

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Lemma 101.25.3. A base change of a flat morphism is flat.

Proof. Combine Remark 101.16.4 with Morphisms of Spaces, Lemma 67.30.4. $\square$

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