Coherent two three forms not both zero
ProvedD1Bound5.coherent_two_three_forms_not_both_zerodiophantine-tuplesnumber-theory
The two coherent polynomial-weight forms cannot both vanish under the four-anchor size condition. Arbitrary square-root signs are allowed, provided the two forms use the same roots on their overlap.
Preamble
import Mathlib.Algebra.BigOperators.NatAntidiagonal import Mathlib.Algebra.QuadraticAlgebra.Basic import Mathlib.Algebra.Ring.Basic import Mathlib.Algebra.Ring.Equiv import Mathlib.Analysis.Analytic.Binomial import Mathlib.Analysis.Complex.Basic import Mathlib.Analysis.Complex.Norm import Mathlib.Analysis.Normed.Ring.Basic import Mathlib.Analysis.SpecificLimits.Normed import Mathlib.Data.Fin.VecNotation import Mathlib.Data.Finset.Card import Mathlib.Data.Finset.Insert import Mathlib.Data.Int.GCD import Mathlib.Data.Sym.Basic import Mathlib.Data.Sym.Card import Mathlib.LinearAlgebra.Dimension.Free import Mathlib.LinearAlgebra.Lagrange import Mathlib.NumberTheory.NumberField.InfinitePlace.TotallyRealComplex import Mathlib.NumberTheory.NumberField.Norm import Mathlib.RingTheory.Binomial import Mathlib.RingTheory.MvPolynomial.Symmetric.Defs import Mathlib.Tactic.ComputeDegree import Mathlib.Tactic.Linarith import Mathlib.Tactic.LinearCombination
Formal statement
section
open Finset
namespace D1Bound5
theorem _root_.D1Bound5.coherent_two_three_forms_not_both_zero
(a R : Fin 4 → ℂ) (hinj : Function.Injective a) (p q z : ℂ)
(hz : z^2 = p*q+1) (hR : ∀ i, (R i)^2 = (a i*p+1)*(a i*q+1))
(hA : 1 ≤ ‖a 0‖) (hAB : ‖a 0‖ ≤ ‖a 1‖)
(hBS : ‖a 1‖ ≤ ‖a 2‖) (hST : ‖a 2‖ ≤ ‖a 3‖)
(hTP : ‖a 3‖ ≤ ‖p‖) (hPQ : ‖p‖ ≤ ‖q‖)
(hsize : 32*‖a 1‖*‖a 2‖*‖a 3‖/‖a 0‖^3 ≤ ‖p‖^2) :
(-(a 0-a 1)*(a 0-a 2)*(a 1-a 2)*z +
a 0*(a 1-a 2)*R 0 - a 1*(a 0-a 2)*R 1 + a 2*(a 0-a 1)*R 2 ≠ 0) ∨
(-(a 0-a 1)*(a 0-a 3)*(a 1-a 3)*z +
a 0*(a 1-a 3)*R 0 - a 1*(a 0-a 3)*R 1 + a 3*(a 0-a 1)*R 3 ≠ 0) := by sorry
end D1Bound5
end
Source
D1Bound5/CoherentThreeNonvanishing.lean, lines 129-163, SHA-256 20f76d470fd8a77be69b6cbe7c960d5062bc8bb2410754eb1f27bcf0090be809. Project: https://github.com/tomislav-math/d1-bound5-lean