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At: inv pair iff ooc 1 1 1

1. A : Type
2. B : Type
3. f : AB
4. g : BA
5. InvFuns(A;B;f;g)  [not for witness]
  f:(AB), g:(BA). InvFuns(A;B;f;g)


By: Witness: f | g THEN Unhide


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(7steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc