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lemma proved term proof

enum_surjective

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formal statement (Lean)

 285lemma enum_surjective : Function.Surjective (enum (E:=E)) :=

proof body

Term-mode proof.

 286  Classical.choose_spec (Countable.exists_surjective_nat (E.countable))
 287
 288/-- An event is eligible once all predecessors have been posted. -/

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depends on (11)

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