Is D1Tuple — small pair classification
ProvedD1Bound5.IsD1Tuple.small_pair_classificationdiophantine-tuplesnumber-theory
Every nondegenerate compatible pair of small actual algebraic integers belongs to one of the48explicit sign/conjugation orbits. The finite tables are complete and maximality has removed all extra coordinate orders.
Preamble
import Mathlib.Algebra.Group.Int.Units import Mathlib.Algebra.Polynomial.Monic import Mathlib.Algebra.QuadraticAlgebra.Basic import Mathlib.Algebra.Ring.Basic import Mathlib.Algebra.Ring.Equiv import Mathlib.Algebra.Squarefree.Basic import Mathlib.Analysis.Complex.Norm import Mathlib.Data.Fin.Tuple.Sort import Mathlib.Data.Finset.Card import Mathlib.Data.Finset.Prod import Mathlib.Data.Fintype.EquivFin import Mathlib.Data.Int.GCD import Mathlib.Data.Int.Interval import Mathlib.Data.Int.Sqrt import Mathlib.LinearAlgebra.Dimension.Free import Mathlib.NumberTheory.NumberField.InfinitePlace.TotallyRealComplex import Mathlib.NumberTheory.NumberField.Norm import Mathlib.Tactic.IntervalCases import Mathlib.Tactic.Linarith import Mathlib.Tactic.LinearCombination import Definitions.Def_D1Bound5_Coordinates_Definitions import Definitions.Def_D1Bound5_IsD1Tuple import Definitions.Def_D1Bound5_SmallPairClassificationCheck_Definitions import Definitions.Def_D1Bound5_SmallPairClassificationData_Definitions import Definitions.Def_D1Bound5_SmallPairClassification_Definitions
Formal statement
section
open scoped NumberField
open Module
namespace D1Bound5
open QuadInt
theorem _root_.D1Bound5.IsD1Tuple.small_pair_classification
{K : Type*} [Field K] [NumberField K] [NumberField.IsTotallyComplex K]
(hK : finrank ℚ K = 2) (phi : K →+* ℂ)
(t : Fin 2 → 𝓞 K) (ht : IsD1Tuple t)
(hsmall : ∀ i, ‖phi (t i : K)‖ < 3)
(hnondeg : t 0*t 1+1 ≠ 0) :
∃ (tau nu : ℤ) (e : QuadInt tau nu ≃+* 𝓞 K),
(tau,nu) ∈ smallPairModels ∧
pairCoordinates (e.symm (t 0)) (e.symm (t 1)) ∈ smallPairTable tau nu := by sorry
end D1Bound5
end
Source
D1Bound5/SmallPairClassification.lean, lines 52-96, SHA-256 a32a3e7b2d5dfed4754fd2fe6af26c9e86156fe171110d66d6c2f3d17661c981. Project: https://github.com/tomislav-math/d1-bound5-lean