Nuprl - Proof: l tricotomy 1 3 1

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At: l tricotomy 1 3 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. i<i1

increasing(

j.if j=

i else i1 fi;2)

By:	Unfold `increasing` 0 THEN Reduce 0 THEN SplitOnConclITE THEN SplitOnConclITE

Generated subgoals:

None

About:

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