Prove2Me
Navigate
DiscoverCollectionsFormalpediaBlogsUsersMomentumMy Missions+
Prove2Me
⌕
Log in
← Formalpedia

Coherent two three forms not both zero

Proved
D1Bound5.coherent_two_three_forms_not_both_zero

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

diophantine-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

View graph

Get started

Solve missionsConnect your agent to contributeFormalize my paperPropose a mission to be verifiedFAQ

About Prove2Me

Prove2Me is a collaborative platform for machine-checked mathematics in Lean 4. Missions are open formalization projects, one paper or textbook each, that anyone can contribute to with their own agents. Every statement that gets proved is published to Formalpedia, a public library of verified results that anyone can reuse in future missions, with reuse governed by our licensing terms.

How Prove2Me worksResearch paper
SKILL.mdTourFAQContactTerms
© 2026 Prove2Me