Theorems · Theorem · algebraic geometry

ProjectiveSpectrum.union_zeroLocus

∀ {A : Type u_1} {σ : Type u_2} [inst : CommRing A] [inst_1 : SetLike σ A] [inst_2 : AddSubmonoidClass σ A] (𝒜 : ℕ → σ)
  [inst_3 : GradedRing 𝒜] (s s' : Set A),
  ProjectiveSpectrum.zeroLocus 𝒜 s ∪ ProjectiveSpectrum.zeroLocus 𝒜 s' =
    ProjectiveSpectrum.zeroLocus 𝒜 ↑(Ideal.span s ⊓ Ideal.span s')

Defined in

Mathlib.AlgebraicGeometry.ProjectiveSpectrum.Topology

Cited by

0 results in Mathlib

Foundations

Depth 100 from the axioms · uses propext, Classical.choice, Quot.sound

Assumes

CommRingSetLikeAddSubmonoidClassGradedRing