(4steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc
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At: iff weakening wrt one one corr 2 1 1

1. A : Type
2. B : Type
3. f : AB
4. g : BA
5. InvFuns(A;B;f;g)
6. A
  B


By: BackThru: AB


Generated subgoals:

None

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(4steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc