Definitions mb event system 1 Sections EventSystems Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
Some definitions of interest.
increasingDef increasing(f;k) == i:(k-1). f(i)<f(i+1)
Thm* k:f:(k). increasing(f;k Prop
int_segDef {i..j} == {k:i  k < j }
Thm* m,n:. {m..n Type
natDef  == {i:| 0i }
Thm*   Type
selectDef l[i] == hd(nth_tl(i;l))
Thm* A:Type, l:A List, n:. 0n  n<||l||  l[n A
uptoDef upto(n) == if n=0 nil else upto(n-1) @ [(n-1)] fi  (recursive)
Thm* n:. upto(n n List

About:
listconsnilifthenelseintnatural_numberadd
subtractless_thansetapplyfunctionrecursive_def_notice
universememberpropimpliesall!abstraction
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html

Definitions mb event system 1 Sections EventSystems Doc