simp [Algebra.coe_norm_int, hζ.norm_sub_one_of_prime_ne_two' (cyclotomic.irreducible_rat p.2) hp]
case a
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
this✝ : NumberField K := IsCyclotomicExtension.numberField {p} ℚ K
this : Fact (↑p).Prime
⊢ (algebraMap ℤ ℚ) ((Algebra.norm ℤ) (↑hζ.unit' - 1)) = (algebraMap ℤ ℚ) ↑↑p
no goals