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Theorems · Theorem · algebraic geometry

AlgebraicGeometry.Scheme.pullbackComparison_forget_surjective

∀ {X Y S : AlgebraicGeometry.Scheme} (f : X ⟶ S) (g : Y ⟶ S),
  Function.Surjective
    ⇑(CategoryTheory.ConcreteCategory.hom
        (CategoryTheory.Limits.pullbackComparison AlgebraicGeometry.Scheme.forget f g))

The comparison map for pullbacks under the forgetful functor Scheme ⥤ Type u is surjective.

Defined in
Mathlib.AlgebraicGeometry.PullbackCarrier
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Foundations
Depth 193 from the axioms · uses propext, Classical.choice, Quot.sound

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