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The Lean 4 theorem `diagKR_hashimoto_selects` in the `ChapterNavierStokesLagrangianKatoRellich` chapter of the timepiece formalization

Proved
BookProof.NavierStokesFlow.LagrangianKatoRellich.diagKR_hashimoto_selects

by leonardopedro · Sep 13, 2026 · Mathlib 0df444a (Lean v4.33.1)

timepiece

The Lean 4 theorem diagKR_hashimoto_selects in the ChapterNavierStokesLagrangianKatoRellich chapter of the timepiece formalization.

Preamble
-- Generated from ChapterNavierStokesLagrangianKatoRellich.lean — theorem BookProof.NavierStokesFlow.LagrangianKatoRellich.diagKR_hashimoto_selects
import Mathlib
import Definitions.Def_ChapterNavierStokesLagrangianKatoRellich
import Definitions.Def_ChapterSirkBandLedger
import Definitions.Def_ChapterRitzCertificate
import Definitions.Def_ChapterHashimotoComplexShifts
open BookProof.NavierStokesFlow
open BookProof.NavierStokesFlow.LagrangianKatoRellich
open Filter Topology
open BookProof.NavierStokesFlow.FullEsa BookProof.NavierStokesFlow.LagrangianEsa BookProof.FarisLavine
open BookProof.EsaClosure BookProof.HashimotoShiftInvert BookProof.HermiteGalerkin
variable {F : Type*} [NormedAddCommGroup F] [InnerProductSpace ℂ F]
variable (L : LagrangianFullData F)


























variable {F : Type*} [NormedAddCommGroup F] [InnerProductSpace ℂ F] [CompleteSpace F]
variable (L : LagrangianFullData F)








open BookProof.NavierStokesFlow.LpNat BookProof.NavierStokesFlow.DiagonalEsa
Formal statement
theorem BookProof.NavierStokesFlow.LagrangianKatoRellich.diagKR_hashimoto_selects (γ : ℕ → ℂ) (hγ : ∀ j, (γ j).im ≠ 0) :
    ∃ (Dom : Submodule ℂ L2N) (A : Dom →ₗ[ℂ] L2N) (X : ℕ → L2N →L[ℂ] L2N),
      IsSelfAdjointExtension (lagrangianCore diagKR) A ∧
      (∀ j, IsShiftInvertC A (γ j) (X j)) ∧
      (∀ j, ‖X j‖ ≤ |(γ j).im|⁻¹) ∧
      (∀ j, Dom = LinearMap.range ((X j : L2N →ₗ[ℂ] L2N))) ∧
      (∀ j k u, X j u - X k u = (γ k - γ j) • X j (X k u)) ∧
      (∀ j k, X j ∘L X k = X k ∘L X j) ∧
      (∀ j m, X j ∘L (ContinuousLinearMap.id ℂ L2N - (γ m - γ j) • X m) = X m) ∧
      (∀ m v k, sirkDen (X m) (fun i => γ m - γ i) k (rkVec X v k) = (X m ^ k) v) ∧
      (∀ j u, Tendsto (fun n : ℕ => galerkinCompression (X j) l2NatBasis n u) atTop
        (nhds (X j u))) ∧
      (∀ j (Dom' : Submodule ℂ L2N) (A' : Dom' →ₗ[ℂ] L2N), IsShiftInvertC A' (γ j) (X j) →
        Dom' = Dom ∧ ∀ (x : L2N) (hx : x ∈ Dom) (hx' : x ∈ Dom'), A' ⟨x, hx'⟩ = A ⟨x, hx⟩) := by sorry
Source
https://github.com/leonardopedro/timepiece/blob/61595bc/BookProof/ChapterNavierStokesLagrangianKatoRellich.lean

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