theorem
proved
term proof
composite_comm_events
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formal statement (Lean)
162theorem composite_comm_events (r₁ : Recognizer C E₁) (r₂ : Recognizer C E₂) (c : C) :
163 (r₁ ⊗ r₂).R c = Prod.swap ((r₂ ⊗ r₁).R c) := by
proof body
Term-mode proof.
164 simp [composite_R_eq]
165
166/-- Indistinguishability is symmetric under swap -/