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lemma proved term proof

minIndex_spec

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formal statement (Lean)

 372lemma minIndex_spec (e : E.Event) : enum (E:=E) (minIndex (E:=E) e) = e := by

proof body

Term-mode proof.

 373  classical
 374  unfold minIndex
 375  exact Nat.find_spec (enum_surjective (E:=E) e)
 376

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depends on (4)

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