IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
nat to nat pair surj111311111 1. k : 2. k1:. k1<k (x,y:. x+y = k1 (a:. nat_to_nat_pair(a) = <x,y>))
3. x : 4. x1:. x1<x (y:. x1+y = k (a:. nat_to_nat_pair(a) = <x1,y>))
5. y : 6. x+y = k 7. x = 0
8. n : 9. nat_to_nat_pair(n) = <x-1,y+1>
next_nat_pair(<x-1,y+1>) = <x,y>
By:
Compute next_nat_pair(<x-1,y+1>) * if y+1=0 <0,x-1+1> else <x-1+1,y+1-1> fi
THEN
SplitITE Concl
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html