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Theorems · Theorem · algebraic geometry

AlgebraicGeometry.isDominant_of_of_appTop_injective

∀ {X Y : AlgebraicGeometry.Scheme} [AlgebraicGeometry.IsAffine Y] {f : X ⟶ Y} [CompactSpace ↥X],
  Function.Injective ⇑(CategoryTheory.ConcreteCategory.hom (AlgebraicGeometry.Scheme.Hom.appTop f)) →
    AlgebraicGeometry.IsDominant f

If f : X ⟶ Y is a morphism of schemes with quasi-compact source and affine target, f induces an injection on global sections, then f is dominant.

Defined in
Mathlib.AlgebraicGeometry.Morphisms.ClosedImmersion
Cited by
0 results in Mathlib
Foundations
Depth 185 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
AlgebraicGeometry.IsAffineCompactSpace

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