Full ring finite PDet Factor ne zero
ProvedD1Bound5.full_ring_finitePDetFactor_ne_zerodiophantine-tuplesnumber-theory
Actual integral arithmetic rules out a zero determinant factor. A nonzero leading factor is an algebraic integer of norm at least one; a zero leading factor is excluded by the exact identity above.
Preamble
import Mathlib.Algebra.BigOperators.Fin 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.LinearAlgebra.Matrix.Determinant.Basic import Mathlib.LinearAlgebra.Matrix.NonsingularInverse import Mathlib.NumberTheory.NumberField.InfinitePlace.TotallyRealComplex import Mathlib.NumberTheory.NumberField.Norm import Mathlib.Tactic.FinCases import Mathlib.Tactic.Linarith import Mathlib.Tactic.LinearCombination import Mathlib.Tactic.NormNum import Mathlib.Tactic.Ring import Definitions.Def_D1Bound5_FinitePMatrix_Definitions
Formal statement
section
open scoped NumberField
open Module
namespace D1Bound5
theorem _root_.D1Bound5.full_ring_finitePDetFactor_ne_zero
{K : Type*} [Field K] [NumberField K] [NumberField.IsTotallyComplex K]
(hK : finrank ℚ K = 2) (phi : K →+* ℂ) (a b s c : 𝓞 K)
(hs : s ≠ 0) (hab : a ≠ b)
(hAB : ‖phi (a : K)‖ ≤ ‖phi (b : K)‖)
(hBS : ‖phi (b : K)‖ ≤ ‖phi (s : K)‖)
(hC : 200*‖phi (s : K)‖ ≤ ‖phi (c : K)‖) :
finitePDetFactor (phi (a : K)) (phi (b : K)) (phi (s : K)) (phi (c : K)) ≠ 0 := by sorry
end D1Bound5
end
Source
D1Bound5/FinitePIntegralRows.lean, lines 45-98, SHA-256 f4ae4543e8d296d5524652a8ec1de382e8c69fd4002555ade9ad3f247eeee37c. Project: https://github.com/tomislav-math/d1-bound5-lean