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At: hd reverse 1

1. T: Type
2. l: T*
3. ||l|| > 0

hd(rev(l)) = l[(||l||-1)]

By: ListInd 2

Generated subgoals:

1 ||nil|| > 0 hd(rev(nil)) = nil[(||nil||-1)] T
23. u: T
4. v: T*
5. ||v|| > 0 hd(rev(v)) = v[(||v||-1)]
||u.v|| > 0 hd(rev(u.v)) = (u.v)[(||u.v||-1)]


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equalsubtractnatural_numberuniverselistimpliesnilcons