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Theorems · Theorem · number theory

NumberField.IsCMField.complexConj_torsion

∀ (K : Type u_1) [inst : Field K] [inst_1 : CharZero K] [inst_2 : NumberField.IsCMField K] [inst_3 : NumberField K]
  (ζ : ↥(NumberField.Units.torsion K)),
  (NumberField.IsCMField.complexConj K) ((algebraMap (NumberField.RingOfIntegers K) K) ↑↑ζ) =
    ((algebraMap (NumberField.RingOfIntegers K) K) ↑↑ζ)⁻¹

The image of a root of unity by the complex conjugation is its inverse. This is the version of Complex.conj_rootsOfUnity for CM-fields.

Defined in
Mathlib.NumberTheory.NumberField.CMField
Cited by
1 results in Mathlib
Foundations
Depth 305 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
FieldCharZeroNumberField.IsCMFieldNumberField

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