Definitions int 2 Sections StandardLIB Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Some definitions of interest.
absvalDef |i| == if 0i i else -i fi
Thm* x:. |x 
iffDef P  Q == (P  Q) & (P  Q)
Thm* A,B:Prop. (A  B Prop
leDef AB == B<A
Thm* i,j:. (ij Prop

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

Definitions int 2 Sections StandardLIB Doc