Q == (P 
Q) & (P Q)
A,B:Prop. (A B) 
Prop xs == Case of xs; nil 
False ; x.ys a = x A 
(a ys)
Def (recursive)
A:Type, a:A, xs:A List. (a xs) Prop| Some definitions of interest. | |
| iff | Q == (P Q) & (P Q) |
| A,B:Prop. (A B) Prop | |
| is_list_mem | xs == Case of xs; nil False ; x.ys a = x A (a ys)
Def (recursive) |
| A:Type, a:A, xs:A List. (a xs) Prop |
About:
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