`BookProof.FreeFieldConstraint.constraint_commutation_identity` (D H A : R) (hDH : bracket D H = 0) : bracket (bracket D A) H = - bracket D (bracket H A)

Proved

BookProof.FreeFieldConstraint.constraint_commutation_identity

by leonardopedro · Oct 5, 2026 · Mathlib 0df444a (Lean v4.33.1)

theoremstimepiece

Prove the following Lean 4 theorem from ChapterFreeFieldConstraint.

BookProof.FreeFieldConstraint.constraint_commutation_identity (D H A : R) (hDH : bracket D H = 0) : bracket (bracket D A) H = - bracket D (bracket H A)

Formalization note: Lean 4 identifier BookProof.FreeFieldConstraint.constraint_commutation_identity.

Preamble

-- Generated from ChapterFreeFieldConstraint.lean — theorem BookProof.FreeFieldConstraint.constraint_commutation_identity
import Mathlib
import Definitions.Def_ChapterFreeFieldConstraint
open BookProof.FreeFieldConstraint

variable {R : Type*} [Ring R]

Formal statement

theorem BookProof.FreeFieldConstraint.constraint_commutation_identity (D H A : R) (hDH : bracket D H = 0) :
    bracket (bracket D A) H = - bracket D (bracket H A) := by sorry

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