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structure definition def or abbrev

Recognizer

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formal statement (Lean)

  34structure Recognizer (C : Type*) (E : Type*) where
  35  /-- The recognition function mapping configurations to events -/
  36  R : C → E
  37  /-- The recognizer is nontrivial: at least two distinct events are produced -/
  38  nontrivial : ∃ c₁ c₂ : C, R c₁ ≠ R c₂
  39
  40/-- A local recognizer is a recognizer on a local configuration space -/

depends on (40)

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