(4steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc
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At: iff weakening wrt one one corr 2
  A,B:Type. (A ~ B)  (A  B)
By: UnivCD THEN (3) Def of A ~ B THEN ExistHD Hyp:3

Generated subgoal:

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

About:
universeimpliesall
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

(4steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc