Nuprl - Proof: one one corr fams if bij A 1 1

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At: one one corr fams if bij A 1 1

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

Type
4. g : A'

A
5. Bij(A'; A; g)
6. f : A

A'
7. InvFuns(A';A;g;f)

(x:A. B(x)) ~ (x':A'. B(g(x')))

By:	Witness: f \| g

Generated subgoal:

1 F:(x:AB(x)B(g(f(x)))), G:(x:AB(g(f(x)))B(x)).
InvFuns(A;A';f;g) & (u:A. InvFuns(B(u);B(g(f(u)));F(u);G(u)))
5 steps

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