IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
bi-tree-diameter
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1. T : Id

2. to : |T|
(IdLnk List)
3. from : |T|
(IdLnk List)
4. bi-graph(T;to;from)
5.
i,j:|T|.
5.
p:Edge(T) List.
5. lconnects(p;i;j) & (
q:Edge(T) List. lconnects(q;i;j) 
q = p)
6. L : |T| List
7.
i:|T|. (i
L)
8. |T|
9. p : Edge(T) List
10. lpath(p)
11.
||p||
||L||
12. i:|T|
i@0:
i@0<||L|| & i = L[i@0]
13.
(
n:
||p||, m:
n. source(p[m]) = source(p[n]))
14. a1 :
||p||
15. a2 :
||p||
16. source(p[a1]) = source(p[a2])
a1 = a2
By: |
Decide (a1 a2) |
Generated subgoals:
1 |
17. a1 a2
a1 = a2
 | 2 steps |
2 |
17. a1 a2
a1 = a2
 | 1 step |
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html