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Is D1Tuple — product Four mixed growth

Proved
D1Bound5.IsD1Tuple.productFour_mixed_growth

by tp · Oct 23, 2026 · Mathlib 0df444a (Lean v4.33.1)

diophantine-tuplesnumber-theory

The mixed growth bound for an actual ordered D(1) quadruple.

Preamble
import Lean.Util.CollectAxioms
import Mathlib.Algebra.CharP.Frobenius
import Mathlib.Algebra.CharP.Two
import Mathlib.Algebra.Order.BigOperators.Ring.Finset
import Mathlib.Algebra.QuadraticAlgebra.Basic
import Mathlib.Algebra.Ring.Basic
import Mathlib.Algebra.Ring.Equiv
import Mathlib.Analysis.CStarAlgebra.Matrix
import Mathlib.Analysis.Complex.Basic
import Mathlib.Analysis.Complex.Norm
import Mathlib.Analysis.Complex.Polynomial.Basic
import Mathlib.Analysis.InnerProductSpace.PiL2
import Mathlib.Analysis.Normed.Group.Basic
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Data.Complex.Basic
import Mathlib.Data.Finset.Card
import Mathlib.Data.Finset.Prod
import Mathlib.Data.Int.GCD
import Mathlib.Data.Int.Interval
import Mathlib.Data.Int.Sqrt
import Mathlib.Data.Real.Basic
import Mathlib.Data.ZMod.Basic
import Mathlib.LinearAlgebra.Dimension.Free
import Mathlib.LinearAlgebra.Matrix.Determinant.Basic
import Mathlib.LinearAlgebra.Matrix.NonsingularInverse
import Mathlib.LinearAlgebra.Matrix.Permutation
import Mathlib.LinearAlgebra.Matrix.SchurComplement
import Mathlib.NumberTheory.NumberField.InfinitePlace.TotallyRealComplex
import Mathlib.NumberTheory.NumberField.Norm
import Mathlib.Tactic.FieldSimp
import Mathlib.Tactic.FinCases
import Mathlib.Tactic.IntervalCases
import Mathlib.Tactic.Linarith
import Mathlib.Tactic.LinearCombination
import Mathlib.Tactic.NormNum
import Mathlib.Tactic.Ring
import Definitions.Def_D1Bound5_IsD1Tuple

Formal statement
section
open scoped NumberField Matrix.Norms.L2Operator BigOperators
open Matrix Module

namespace D1Bound5
















theorem _root_.D1Bound5.IsD1Tuple.productFour_mixed_growth
    {K : Type*} [Field K] [NumberField K]
    [NumberField.IsTotallyComplex K]
    (hK : finrank ℚ K = 2) (phi : K →+* ℂ)
    (t : Fin 4 → 𝓞 K) (ht : IsD1Tuple t)
    (hmon : Monotone (fun i => ‖phi (t i : K)‖))
    (hA : 1 ≤ ‖phi (t 0 : K)‖)
    (hB : 3 ≤ ‖phi (t 1 : K)‖) :
    (3/2 : ℝ)*‖phi (t 0 : K)‖*‖phi (t 1 : K)‖*
      ‖phi (t 2 : K)‖ < ‖phi (t 3 : K)‖ := by sorry

end D1Bound5
end
Source
D1Bound5/MixedProductFourGrowth.lean, lines 220-234, SHA-256 6405700c83d4efaa313716abc06975c43c8dd7320d44c6d848be130386d5f504. Project: https://github.com/tomislav-math/d1-bound5-lean

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