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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 -/

depends on (5)

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