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Theorems · Theorem · commutative algebra

surjective_fontaineTheta

∀ {R : Type u} [inst : CommRing R] {p : ℕ} [inst_1 : Fact (Nat.Prime p)] [inst_2 : Fact ¬IsUnit ↑p]
  [inst_3 : IsAdicComplete (Ideal.span {↑p}) R],
  Function.Surjective ⇑(frobenius (ModP R p) p) → Function.Surjective ⇑(WittVector.fontaineTheta R p)

If the Frobenius map is surjective on R/pR, then the Fontaine's θ map is surjective.

Defined in
Mathlib.RingTheory.Perfectoid.FontaineTheta
Cited by
0 results in Mathlib
Foundations
Depth 156 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CommRingFactFactIsAdicComplete

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