rw [s] at w
case intro.intro.intro.intro.intro
a b c : ℤθ
k : ℤ
w : ↑(unit ^ (3 * k + 1)) = ↑(unit ^ (3 * k)) * ↑(unit ^ 1)
j1 j2 j3 : ℤ
s : ↑(unit ^ (3 * k)) = { f := 3 * j1 + 1, g := 3 * j2, h := 3 * j3 }
⊢ (↑(unit ^ (3 * k + 1))).f % 3 = 2 ∧ (↑(unit ^ (3 * k + 1))).g % 3 = 0 ∧ (↑(unit ^ (3 * k + 1))).h % 3 = 2
case intro.intro.intro.intro.intro
a b c : ℤθ
k j1 j2 j3 : ℤ
w : ↑(unit ^ (3 * k + 1)) = { f := 3 * j1 + 1, g := 3 * j2, h := 3 * j3 } * ↑(unit ^ 1)
s : ↑(unit ^ (3 * k)) = { f := 3 * j1 + 1, g := 3 * j2, h := 3 * j3 }
⊢ (↑(unit ^ (3 * k + 1))).f % 3 = 2 ∧ (↑(unit ^ (3 * k + 1))).g % 3 = 0 ∧ (↑(unit ^ (3 * k + 1))).h % 3 = 2