Def mu(f) == if f(0) 0 else mu(x.f(x+1))+1 fi  (recursive)

is mentioned by

Thm* f:(). (n:. f(n))  f(mu(f)) & (i:. i<mu(f)  f(i))

[mu-property]

Try larger context: EventSystems IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html