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Theorems · Theorem · number theory

IsCyclotomicExtension.Rat.inertiaDeg_eq_of_not_dvd

∀ {m : ℕ} (p : ℕ) [hp : Fact (Nat.Prime p)] (K : Type u_1) [inst : Field K] [inst_1 : NumberField K]
  (P : Ideal (NumberField.RingOfIntegers K)) [hP₁ : P.IsPrime] [hP₂ : P.LiesOver (Ideal.span {↑p})] [NeZero m]
  [hK : IsCyclotomicExtension {m} ℚ K], ¬p ∣ m → P.inertiaDeg ℤ = orderOf ↑p
Defined in
Mathlib.NumberTheory.NumberField.Cyclotomic.Ideal
Cited by
1 results in Mathlib
Foundations
Depth 322 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
FactFieldNumberFieldIdeal.IsPrimeIdeal.LiesOverNeZeroIsCyclotomicExtension

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