| 1 |
8. ( x.destination(out(x))) |R| |R|
9. i@0 : |R|
10. i@0 = i Id
11. j : |R|
12. n :
13. n1: .
13. n1<n
13. 
13. x.destination(out(x))^n1(i) = j Id
13. 
13. ( m: k. x.destination(out(x))^m(i) = j Id)
14. x.destination(out(x))^n-k( x.destination(out(x))^k(i)) = j Id
15. n<k
16. f : |R| |R|
17. ( x.destination(out(x))) = f
18. f^k(i) = i Id
f^n-k(i) = f^n-k(f^k(i)) Id
 | 7 steps |
| 2 |
8. ( x.destination(out(x))) |R| |R|
9. i@0 : |R|
10. i@0 = i Id
11. j : |R|
12. n :
13. n1: .
13. n1<n
13. 
13. x.destination(out(x))^n1(i) = j Id
13. 
13. ( m: k. x.destination(out(x))^m(i) = j Id)
14. x.destination(out(x))^n-k( x.destination(out(x))^k(i)) = j Id
15. n<k
16. f : |R| |R|
17. ( x.destination(out(x))) = f
f^k(i) Id
 | 1 step |
| 3 |
8. ( x.destination(out(x))) |R| |R|
9. i@0 : |R|
10. i@0 = i Id
11. j : |R|
12. n :
13. n1: .
13. n1<n
13. 
13. x.destination(out(x))^n1(i) = j Id
13. 
13. ( m: k. x.destination(out(x))^m(i) = j Id)
14. x.destination(out(x))^n-k( x.destination(out(x))^k(i)) = j Id
15. n<k
16. f : |R| |R|
17. ( x.destination(out(x))) = f
i Id
 | 1 step |