IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
compose iter injection121 1. A : Type
2. f : AA 3. Inj(A; A; f)
4. i :
5. 0<i 6. a1 : A 7. a2 : A 8. f{i}(a1) = f{i}(a2)
f{i-1}(a1) = f{i-1}(a2)
By:
Compute-1
Co(f{i}(a1) * if i=0 a1 else f(f{i-1}(a1)) fi)
Co=
Co(f{i}(a2) * if i=0 a2 else f(f{i-1}(a2)) fi)
Co A THEN
SplitITE Hyp:-1