theorem instCoeProcessBoundaryOccurrent._proof_1
theorem instCoeProcessBoundaryOccurrent._proof_1: ∀ (v : ta3nj1a4.ProcessBoundary), ta3nj1a4.Occurrent.Is (Subtype.val v)
theorem instCoeProcessBoundaryOccurrent._proof_1
theorem instCoeProcessBoundaryOccurrent._proof_1: ∀ (v : ta3nj1a4.ProcessBoundary), ta3nj1a4.Occurrent.Is (Subtype.val v)