Is D1 — coherent terminal root lift
ProvedD1Bound5.IsD1.coherent_terminal_root_liftdiophantine-tuplesnumber-theory
The coherent terminal root of two actual tuple entries lifts to the original ring, even though the auxiliary square root eta need not do so.
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.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.Linarith import Mathlib.Tactic.LinearCombination import Definitions.Def_D1Bound5_CoherentIntegralForms_Definitions import Definitions.Def_D1Bound5_IsD1
Formal statement
section
open Finset
open scoped NumberField
open Module
namespace D1Bound5
theorem _root_.D1Bound5.IsD1.coherent_terminal_root_lift
{R : Type*} [CommRing R] (f : R →+* ℂ) (hf : Function.Injective f)
{T : Finset R} (hT : IsD1 T) {p q : R}
(hp : p ∈ T) (hq : q ∈ T) (hpq : p ≠ q)
(eta : ℂ) (heta : eta ^ 2 = f p * f q) :
∃ z : R, f z = coherentTerminalRoot (f p) (f q) eta := by sorry
end D1Bound5
end
Source
D1Bound5/CoherentIntegralForms.lean, lines 28-47, SHA-256 81e6a044e834ea1f7a20cfce931dfefd9cdd8cbc6a1dc7467c69328d64c38e4c. Project: https://github.com/tomislav-math/d1-bound5-lean