`BookProof.ChapterWeylSL2Group.weyl_complete_reducibility_SL2` [FiniteDimensional ℂ V] (h : IsExpOfSl2 rho R N) {W : Submodule ℂ V} (hW : ∀ g : Matrix.SpecialLinearGroup (Fin 2) ℂ,

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`BookProof.ChapterWeylSL2Group.weyl_complete_reducibility_SL2` [FiniteDimensional ℂ V] (h : IsExpOfSl2 rho R N) {W : Submodule ℂ V} (hW : ∀ g : Matrix.SpecialLinearGroup (Fin 2) ℂ, · Prove2Me