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The Stacks project

  • \mathcal{Q} =“locally of finite presentation”, \mathcal{R} =“flat and locally of finite presentation”, and \mathcal{P}=“étale”. This follows on combining (3) and (4) because an unramified morphism which is flat and locally of finite presentation is étale, see Morphisms of Spaces, Lemma 67.39.12.


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