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Unit pair symmetric complex obstruction

Proved
D1Bound5.unit_pair_symmetric_complex_obstruction

by tp · Oct 24, 2026 · Mathlib 0df444a (Lean v4.33.1)

diophantine-tuplesnumber-theory

The numerical contradiction behind the symmetric-five obstruction. The two lower bounds will be supplied by integrality of the factors.

Preamble
import Mathlib.Algebra.QuadraticAlgebra.Basic
import Mathlib.Algebra.Ring.Basic
import Mathlib.Algebra.Ring.Equiv
import Mathlib.Analysis.Complex.Norm
import Mathlib.Data.Finset.Card
import Mathlib.Data.Int.GCD
import Mathlib.LinearAlgebra.Dimension.Free
import Mathlib.NumberTheory.NumberField.InfinitePlace.TotallyRealComplex
import Mathlib.NumberTheory.NumberField.Norm
import Mathlib.Tactic.Linarith
import Mathlib.Tactic.LinearCombination

Formal statement
section
open scoped NumberField
open Module

namespace D1Bound5




theorem _root_.D1Bound5.unit_pair_symmetric_complex_obstruction
    (a b G J : ℂ) (hA : 3 ≤ ‖a‖) (hAB : ‖a‖ ≤ ‖b‖)
    (hG : G = 2 * a ^ 2 * b ^ 2 - a ^ 2 - 1)
    (hid : (G - J) * (G + J) = (a ^ 2 - 1) ^ 2)
    (hm : 1 ≤ ‖G - J‖) (hp : 1 ≤ ‖G + J‖) : False := by sorry







end D1Bound5
end
Source
D1Bound5/UnitPairSymmetric.lean, lines 23-60, SHA-256 695ec9ac631f60966fa825624a829a3fc795041a1c15a2f07c5f310997593968. Project: https://github.com/tomislav-math/d1-bound5-lean

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