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Finite A4 residue identity

Proved
D1Bound5.finiteA4_residue_identity

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

diophantine-tuplesnumber-theory

Every actual integral A4 entry equals its unequal-pole residue. The finite sums, row factors and common divisor g are all verified here.

Preamble
import Lean.Elab.Tactic.Omega
import Mathlib.Algebra.BigOperators.Fin
import Mathlib.Algebra.BigOperators.Group.Finset.Sigma
import Mathlib.Algebra.BigOperators.NatAntidiagonal
import Mathlib.Algebra.CharZero.Infinite
import Mathlib.Algebra.Polynomial.BigOperators
import Mathlib.Algebra.Polynomial.Degree.Operations
import Mathlib.Algebra.Polynomial.Div
import Mathlib.Algebra.Polynomial.PartialFractions
import Mathlib.Algebra.Polynomial.Reverse
import Mathlib.Algebra.Polynomial.RingDivision
import Mathlib.Algebra.Polynomial.Roots
import Mathlib.Analysis.Analytic.Binomial
import Mathlib.Analysis.Complex.Basic
import Mathlib.Analysis.Normed.Ring.Basic
import Mathlib.Analysis.Normed.Ring.InfiniteSum
import Mathlib.Analysis.SpecificLimits.Normed
import Mathlib.Combinatorics.Enumerative.Catalan.Basic
import Mathlib.Data.Finset.Insert
import Mathlib.Data.Sym.Basic
import Mathlib.Data.Sym.Card
import Mathlib.LinearAlgebra.Lagrange
import Mathlib.LinearAlgebra.Matrix.Determinant.Basic
import Mathlib.LinearAlgebra.Matrix.NonsingularInverse
import Mathlib.LinearAlgebra.Matrix.Polynomial
import Mathlib.RingTheory.Binomial
import Mathlib.RingTheory.MvPolynomial.Symmetric.Defs
import Mathlib.RingTheory.PowerSeries.Binomial
import Mathlib.RingTheory.PowerSeries.Trunc
import Mathlib.Tactic
import Mathlib.Tactic.FieldSimp
import Mathlib.Tactic.FinCases
import Mathlib.Tactic.Linarith
import Mathlib.Tactic.LinearCombination
import Mathlib.Tactic.NormNum
import Mathlib.Tactic.Positivity
import Mathlib.Tactic.Ring
import Definitions.Def_D1Bound5_FiniteA4Matrix_Definitions
import Definitions.Def_D1Bound5_FiniteUnequalEntry_Definitions

Formal statement
section
namespace D1Bound5
variable {F : Type*} [Field F] [CharZero F]

set_option maxHeartbeats 12000000 in

theorem _root_.D1Bound5.finiteA4_residue_identity (x y c : F)
    (hx : x ≠ 0) (hy : y ≠ 0) (hxy : x ≠ y) (i j : Fin 3) :
    finiteUnequalClearedEntry x y c 4 3 i j =
      2*finiteA4RowFactor x y i*finiteA4Matrix x y c i j := by sorry

end D1Bound5
end
Source
D1Bound5/FiniteA4ResidueIdentity.lean, lines 9-47, SHA-256 b831a56c76379dade53db5929a1c3eec12c42f39b05f5d515e4e93ebca458e49. Project: https://github.com/tomislav-math/d1-bound5-lean

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