Nuprl - Proof: select wf 1 1

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At: select wf 1 1

1. A : Type
2. l : A List
3. n :

4. 0

n
5. n<||l||

hd(nth_tl(n;l))

By:

Analyze

Generated subgoal:

1 ||nth_tl(n;l)||1
2 steps

About:

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