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`BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_H` : R.cas * R.H = R.H * R.cas

Proved
BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_H

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

theoremstimepiece

Prove the following Lean 4 theorem from ChapterWeylSl2.

BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_H : R.cas * R.H = R.H * R.cas

Formalization note: Lean 4 identifier BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_H.

Preamble
-- Generated from ChapterWeylSl2.lean — theorem BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_H
import Mathlib
import Definitions.Def_ChapterWeylSl2
import Definitions.Def_ChapterDoubleSlit
import Definitions.Def_ChapterGleasonPureMixed
open BookProof.ChapterDoubleSlit
open BookProof.ChapterGleasonPureMixed
open BookProof.ChapterWeylSl2
open BookProof.ChapterWeylSl2



universe u

variable {V : Type u} [AddCommGroup V] [Module ℂ V]

variable (R : Sl2Rep V)
variable {R}
Formal statement
theorem BookProof.ChapterWeylSl2.Sl2Rep.cas_comm_H : R.cas * R.H = R.H * R.cas := by sorry

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