meaning of constructed type
1.   constructed type A type formed by applying some type constructor function to one or more other types.   The usual constructions are functions: t1 -> t2, products: t1, t2, sums: t1 + t2 and lifting: liftt1.  In LaTeX, the lifted type is written with a subscript perp.  See also algebraic data type, primitive type. 
						 
