Prove2Me

`BookProof.NsLagrangianDet.dispField_im` (kv : K → Fin 3 → ℝ) (y : DIdx K → ℝ) (a : Fin 3 → ℝ) (i : Fin 3) : (dispField kv y a i).im = 0

Proved
BookProof.NsLagrangianDet.dispField_im

by leonardopedro · Oct 10, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterNsLagrangianDetConvolution.

BookProof.NsLagrangianDet.dispField_im (kv : K → Fin 3 → ℝ) (y : DIdx K → ℝ) (a : Fin 3 → ℝ) (i : Fin 3) : (dispField kv y a i).im = 0

Formalization note: Lean 4 identifier BookProof.NsLagrangianDet.dispField_im.

Preamble
-- Generated from ChapterNsLagrangianDetConvolution.lean — theorem BookProof.NsLagrangianDet.dispField_im
import Mathlib
import Definitions.Def_ChapterNsLagrangianDetConvolution
open BookProof.NsLagrangianDet



open MvPolynomial Matrix

noncomputable section

variable {K : Type*} [Fintype K]
Formal statement
theorem BookProof.NsLagrangianDet.dispField_im (kv : K → Fin 3 → ℝ) (y : DIdx K → ℝ) (a : Fin 3 → ℝ) (i : Fin 3) :
    (dispField kv y a i).im = 0 := by sorry

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