Definitions DiscreteMath Sections DiscrMathExt Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Some definitions of interest.
boolsizeDef  size(a)(p) == Msize(x.if p(x) 1 else 0 fi)
Thm*  a:. size(a)  (a)
int_segDef  {i..j} == {k:| i  k < j }
Thm*  m,n:. {m..n}  Type
natDef   == {i:| 0i }
Thm*    Type

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

Definitions DiscreteMath Sections DiscrMathExt Doc