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Theorems · Theorem · number theory

NumberField.IsCMField.orderOf_complexConj

∀ (K : Type u_1) [inst : Field K] [inst_1 : CharZero K] [inst_2 : NumberField.IsCMField K]
  [inst_3 : Algebra.IsIntegral ℚ K], orderOf (NumberField.IsCMField.complexConj K) = 2

The complex conjugation is an automorphism of degree 2.

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.IsCMFieldAlgebra.IsIntegral

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