theorem
proved
term proof
composite_R_eq
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formal statement (Lean)
57theorem composite_R_eq (r₁ : Recognizer C E₁) (r₂ : Recognizer C E₂) (c : C) :
58 (r₁ ⊗ r₂).R c = (r₁.R c, r₂.R c) := rfl
proof body
Term-mode proof.
59
60/-- Indistinguishability under composite iff indistinguishable under both -/