Trace zero tau zero compatible opposite

import Mathlib.Algebra.QuadraticAlgebra.Basic
import Mathlib.Data.Int.Sqrt
import Mathlib.Tactic.Linarith
import Definitions.Def_D1Bound5_Coordinates_Definitions

section
namespace D1Bound5










theorem _root_.D1Bound5.trace_zero_tau_zero_compatible_opposite {nu : ℤ} (hnu : 1 < nu)
    (z w : QuadInt 0 nu) (hz0 : z ≠ 0) (hw0 : w ≠ 0)
    (hz : 2 * z.re = 0) (hw : 2 * w.re = 0)
    (hsquare : ∃ r : QuadInt 0 nu, r * r = z * w + 1) :
    z.im * w.im < 0 := by sorry













end D1Bound5
end