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At: bij iff 1 1 corr 1 1
1. A : Type
2. B : Type
3. f : AB
4. Bij(A; B; f)
  g:(BA). InvFuns(A; B; f; g)
By: BackThru Thm* f:(AB). Bij(A; B; f)  (g:(BA). InvFuns(A; B; f; g))

Generated subgoals:

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functionuniverseimpliesallexists
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(5steps total) PrintForm Definitions Lemmas fun 1 Sections StandardLIB Doc