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IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At: l tricotomy 1 1

1. T : Type
2. x : T
3. y : T
4. L : T List
5. i1 : 
6. i1<||L||
7. x = L[i1]
8. i : 
9. i<||L||
10. y = L[i]
11. i1<i
  [xy L


By: Unfold `sublist` 0 THEN Reduce 0 THEN InstConcl [j.if j=0 i1 else i fi]
THEN
Reduce 0
THEN
Try (Unfold `increasing` 0 THEN Reduce 0)
THEN
Repeat SplitOnConclITE


Generated subgoals:

1 12. j : 2
13. j = 0
  [xy][j] = L[i1]

1 step
2 12. j : 2
13. j = 0
  [xy][j] = L[i]

1 step

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

(11steps total) PrintForm Definitions Lemmas mb list 1 Sections MarkB generic Doc