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Actus.Closures

inductive Actus.Closures.Star {α : Type} (r : α → α → Type) :
α → α → Type

Star r a b: b is reachable from a in zero or more r-steps.

  • refl {α : Type} {r : α → α → Type} {a : α} : Star r a a
  • step {α : Type} {r : α → α → Type} {a b c : α} : r a b → Star r b c → Star r a c
Instances For