Definitions mb list 1 Sections MarkB generic Doc
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Some definitions of interest.
appendDef as @ bs == Case of as; nil  bs ; a.as'  [a / (as' @ bs)]  (recursive)
Thm* T:Type, as,bs:T List. (as @ bs T List
listpDef A List == {l:(A List)| (0<||l||) }
Thm* A:Type. A List  Type

About:
listconslist_indnatural_number
setrecursive_def_noticeuniversememberall!abstraction
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Definitions mb list 1 Sections MarkB generic Doc