convert dvd_mul_right 3 (Multiset.count x.norm.natAbs (factorsOddPrimeOrFour r))
case intro.h
a : ℤ√(-3)
r : ℕ
hcoprime : IsCoprime a.re a.im
hcube : r ^ 3 = a.norm.natAbs
f : Multiset (ℤ√(-3)) := factorization' hcoprime
h1 : a = f.prod ∨ a = -f.prod
h2 : ∀ pq ∈ f, 0 ≤ pq.re ∧ pq.im ≠ 0 ∧ OddPrimeOrFour pq.norm.natAbs
hf : f = factorization' hcoprime
x : ℤ√(-3)
hx : x ∈ f
⊢ 3 ∣ Multiset.count x f
case h.e'_4
a : ℤ√(-3)
r : ℕ
hcoprime : IsCoprime a.re a.im
hcube : r ^ 3 = a.norm.natAbs
f : Multiset (ℤ√(-3)) := factorization' hcoprime
h1 : a = f.prod ∨ a = -f.prod
h2 : ∀ pq ∈ f, 0 ≤ pq.re ∧ pq.im ≠ 0 ∧ OddPrimeOrFour pq.norm.natAbs
hf : f = factorization' hcoprime
x : ℤ√(-3)
hx : x ∈ f
⊢ Multiset.count x f = 3 * Multiset.count x.norm.natAbs (factorsOddPrimeOrFour r)