Nuprl - Proof: compose iter inverses 1 1

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

1. A : Type
2. f : A

A
3. g : A

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

6. x : A

i}(f{

i}(x)) = x

By:	NatInd Hyp:-2

Generated subgoals:

1 5. x : A
g{0}(f{0}(x)) = x
1 step

2 5. x : A
6. i :
7. 0<i
8. g{i-1}(f{i-1}(x)) = x
g{i}(f{i}(x)) = x
4 steps

About:

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

1	5. x : A g{0}(f{0}(x)) = x	1 step
2	5. x : A 6. i : 7. 0<i 8. g{i-1}(f{i-1}(x)) = x g{i}(f{i}(x)) = x	4 steps