| Some definitions of interest. |
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listp | Def A List == {l:(A List)| (0< ||l||) } |
| | Thm* A:Type. A List Type |
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map | Def map(f;as) == Case of as; nil nil ; a.as' [(f(a)) / map(f;as')]
Def (recursive) |
| | Thm* A,B:Type, f:(A B), l:A List. map(f;l) B List |
| | Thm* A,B:Type, f:(A B), l:A List . map(f;l) B List |