letI := IsCyclotomicExtension.numberField {p} ℚ K
K : Type u_1
p : ℕ+
hpri : Fact p.Prime
inst✝² : Field K
inst✝¹ : CharZero K
inst✝ : IsCyclotomicExtension {p} ℚ K
ζ : K
hζ : IsPrimitiveRoot ζ ↑p
hp : p ≠ 2
σ : 𝓞 K →+* 𝓞 K
this : Fact (↑p).Prime
⊢ (Ideal.Quotient.mk (Ideal.span {↑hζ.unit' - 1})).comp σ = Ideal.Quotient.mk (Ideal.span {↑hζ.unit' - 1})
K : Type u_1
p : ℕ+
hpri : Fact p.Prime
inst✝² : Field K
inst✝¹ : CharZero K
inst✝ : IsCyclotomicExtension {p} ℚ K
ζ : K
hζ : IsPrimitiveRoot ζ ↑p
hp : p ≠ 2
σ : 𝓞 K →+* 𝓞 K
this✝ : Fact (↑p).Prime
this : NumberField K := IsCyclotomicExtension.numberField {p} ℚ K
⊢ (Ideal.Quotient.mk (Ideal.span {↑hζ.unit' - 1})).comp σ = Ideal.Quotient.mk (Ideal.span {↑hζ.unit' - 1})