Definitions list 1 Sections StandardLIB Doc
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Some definitions of interest.
leDef AB == B<A
Thm* i,j:. (ij Prop
rejectDef as\[i]
Def == if i0 tl(as) else Case of as; nil  nil ; a'.as'  a'.as'\[i-1] fi
Def (recursive)
Thm* A:Type, l:A List, n:l\[n A List
tlDef tl(l) == Case of l; nil  nil ; h.t  t
Thm* A:Type, l:A List. tl(l A List

About:
listconsnillist_indifthenelseint
natural_numbersubtractless_thanrecursive_def_noticeuniversememberpropall!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions list 1 Sections StandardLIB Doc