Nuprl - Proof: compose iter inverses 1 2 2

IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: compose iter inverses 1 2 2

1. A : Type
2.

f,g:(A

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

(

, x:A. g{

i}(f{

i}(x)) = x)
3. f : A

A
4. g : A

A
5. InvFuns(A;A;f;g)
6. i :

7. y : A

i}(g{

i}(y)) = y

By:	BackThru: Hyp:2

Generated subgoal:

1 InvFuns(A;A;g;f)
1 step

About:

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