Nuprl - Proof: select cons hd 1 1

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At: select cons hd 1 1

1. T : Type
2. a : T
3. as : T List
4. i :

5. i

hd(nth_tl(i;a.as)) = a

By:	RecUnfold `nth_tl` 0 THEN SplitOnConclITE

Generated subgoal:

1 6. i0
hd((a.as)) = a
1 step

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