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Theorems · Theorem · algebraic geometry

AlgebraicGeometry.Scheme.IsQuasiAffine.of_isImmersion

∀ {X Y : AlgebraicGeometry.Scheme} (f : X ⟶ Y) [Y.IsQuasiAffine] [AlgebraicGeometry.IsImmersion f] [CompactSpace ↥X],
  X.IsQuasiAffine

Any quasicompact locally closed subscheme of a quasi-affine scheme is quasi-affine.

Defined in
Mathlib.AlgebraicGeometry.QuasiAffine
Cited by
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Foundations
Depth 225 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
AlgebraicGeometry.Scheme.IsQuasiAffineAlgebraicGeometry.IsImmersionCompactSpace

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