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Finite A5Row Form exists ne zero

Proved
D1Bound5.finiteA5RowForm_exists_ne_zero

by tp · Oct 24, 2026 · Mathlib 0df444a (Lean v4.33.1)

diophantine-tuplesnumber-theory

Auxiliary result finiteA5RowForm_exists_ne_zero in the proof of the bound five for Diophantine D(1) sets in imaginary quadratic integer rings. The formal statement specifies its hypotheses and conclusion; a mathematical prose description remains to be supplied.

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
import Mathlib.Tactic.Linarith
import Mathlib.Tactic.LinearCombination
import Definitions.Def_D1Bound5_FiniteA5IntegralRows_Definitions

Formal statement
section
open scoped NumberField
open Module

namespace D1Bound5

variable {R S : Type*} [CommRing R] [CommRing S]













theorem _root_.D1Bound5.finiteA5RowForm_exists_ne_zero
    {F : Type*} [Field F] [CharZero F]
    (x y c z sX sY : F) (hx : x ≠ 0) (hy : y ≠ 0) (hc : c ≠ 0) (hxy : x ≠ y) (hz : z ≠ 0) :
    ∃ i : Fin 3, finiteA5RowForm x y c z sX sY i ≠ 0 := by sorry



end D1Bound5
end
Source
D1Bound5/FiniteA5IntegralRows.lean, lines 44-59, SHA-256 135a11e7f96cd3ffa5b3aba636da84c37adec2ecbaa3d92a22ae8fb4a3140799. Project: https://github.com/tomislav-math/d1-bound5-lean

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