Lemma 73.11.22. The property $\mathcal{P}(f) =$“$f$ is integral” is fpqc local on the base.

Proof. An integral morphism is the same thing as an affine, universally closed morphism. See Morphisms of Spaces, Lemma 66.45.7. Hence the lemma follows on combining Lemmas 73.11.3 and 73.11.16. $\square$

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