Who Cites array ub?
array_ub	Def a.u == 1of(2of(a))
	Thm* T:Type, a:[T]Array . a.u
pi2	Def 2of(t) == t.2
	Thm* A:Type, B:(AType), p:(a:AB(a)). 2of(p)  B(1of(p))
pi1	Def 1of(t) == t.1
	Thm* A:Type, B:(AType), p:(a:AB(a)). 1of(p)  A

Syntax:

a.u

has structure:

array_ub(a)

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