exact p1
case inl.intro
a b c : ℤθ
q : ℤ
h1 : 0 < q
p1 : (↑(unit ^ (3 * q))).f % 3 = 1 ∧ (↑(unit ^ (3 * q))).g % 3 = 0 ∧ (↑(unit ^ (3 * q))).h % 3 = 0
p2 :
  (↑(unit ^ (3 * -↑(Int.toNat q)))).f % 3 = 1 ∧
    (↑(unit ^ (3 * -↑(Int.toNat q)))).g % 3 = 0 ∧ (↑(unit ^ (3 * -↑(Int.toNat q)))).h % 3 = 0
⊢ (↑(unit ^ (3 * q))).f % 3 = 1 ∧ (↑(unit ^ (3 * q))).g % 3 = 0 ∧ (↑(unit ^ (3 * q))).h % 3 = 0
no goals