Nuprl - Proof: inv pair iff ooc 1 2 1

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At: inv pair iff ooc 1 2 1

1. A : Type
2. B : Type
3. f : A

B
4. g : B

A
5. InvFuns(A;B;f;g)

{fg:((A

A))| fg/f,g. InvFuns(A;B;f;g) }

By:	Witness: <f,g>

Generated subgoal:

1 <f,g> {fg:((AB)(BA))| fg/f,g. InvFuns(A;B;f;g) }
1 step

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