Definitions num thy 1 Sections StandardLIB Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Some definitions of interest.
dividesDef b | a == c:a = bc
Thm* a,b:. (a | b Prop
gcdDef gcd(a;b) == if b=0 a else gcd(b;a rem b) fi  (recursive)
Thm* a,b:. gcd(a;b 

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

Definitions num thy 1 Sections StandardLIB Doc