Definitions list 1 Sections StandardLIB Doc
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Some definitions of interest.
int_segDef {i..j} == {k:i  k < j }
Thm* m,n:. {m..n Type
lengthDef ||as|| == Case of as; nil  0 ; a.as'  ||as'||+1  (recursive)
Thm* A:Type, l:A List. ||l||  
Thm* ||nil||  
selectDef l[i] == hd(nth_tl(i;l))
Thm* A:Type, l:A List, n:. 0n  n<||l||  l[n A
tlDef tl(l) == Case of l; nil  nil ; h.t  t
Thm* A:Type, l:A List. tl(l A List

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listnillist_indintnatural_numberaddless_than
setrecursive_def_noticeuniversememberimpliesall!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions list 1 Sections StandardLIB Doc