Nuprl - Proof: union functionality wrt one one corr 1 1 4

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: union functionality wrt one one corr 1 1 4

1. A : Type
2. A' : Type
3. B : Type
4. B' : Type
5. f : A

A'
6. g : A'

A
7. InvFuns(A;A';f;g)
8. f1 : B

B'
9. g1 : B'

B
10. InvFuns(B;B';f1;g1)
11. y1 : B'

f1(g1(y1)) = y1

By:	BackThru: InvFuns(B;B';f1;g1)

Generated subgoals:

None

About:

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