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At: lpower alt 1 2 2 1 2 2

1. Alph: Type
2. L: Alph*
3. n:
4. 0 < n
5. (Ln-1) = if n-1=0 nil else L @ (Ln-1-1) fi
6. n = 0
7. n-1 = 0
8. (Ln-1) = (L @ (Ln-1-1))

(Ln) = (L @ (Ln-1-1) @ L)

By: RWH (RevLemmaC Thm* as,bs,cs:T*. ((as @ bs) @ cs) = (as @ (bs @ cs))) 0

Generated subgoal:

1 (Ln) = ((L @ (Ln-1-1)) @ L)


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