Vietnamese dictionaries for mobile phones

A function f may have many fixed points (x such that f x =

x). For example, any value is a fixed point of the identity

function, ( x . x). If f is recursive, we can represent it

f = fix F

fix F = F (fix F).

The standard denotational semantics of f is then given by

the least fixed point of F. This is the least upper bound

of the infinite sequence (the ascending Kleene chain)

obtained by repeatedly applying F to the totally undefined

value, bottom. I.e.

The least fixed point is guaranteed to exist for a

continuous function over a cpo.