Who Cites factorial tail via iter?
factorial_tail_via_iter	Def  k!m ==  i:{k-m..k}. i+1
	Thm*  m,k:. k!m
iter_via_intseg	Def  Iter(f;u) i:{a..b}. e(i) Def  == if a<b f(Iter(f;u) i:{a..b-1}. e(i),e(b-1)) else u fi Def  (recursive)
	Thm*  f:(AAA), u:A, a,b:, e:({a..b}A). (Iter(f;u) i:{a..b}. e(i))  A
lt_int	Def  i<j == if i<j true ; false fi
	Thm*  i,j:. (i<j)

Syntax:

k!m

has structure:

factorial_tail_via_iter(m; k)

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