(9steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: fun with inv is bij version2 1
1. A : Type
2. B : Type
3. f : AB
4. g : BA
5. InvFuns(A;B;f;g)
  Bij(A; B; f)
By: Analyze-1

Generated subgoal:

1 5. x:A. g(f(x)) = x
6. y:B. f(g(y)) = y
  Bij(A; B; f)
7 steps

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

(9steps total) PrintForm Definitions DiscreteMath Sections DiscrMathExt Doc