Nuprl - Proof: fun with inv2 is bij 1 2

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At: fun with inv2 is bij 1 2

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

B
4. g : B

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

Surj(A; B; f)

By:	Use:[g] BackThru: Thm* InvFuns(A;B;f;g) Surj(A; B; f)

Generated subgoals:

None

About:

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