UMLR — UML 2 - appearance of Association Ends as members of the related classes

Since the dot notation was introduced to represent ownership of association ends separately from navigability, it appears that the following is the case: a navigable association end that is owned by the association does not appear in the namespace of the class from which it is navigable. How, then, can it be said to be navigable? I believe that all navigable ends should appear in the namespace of the class from which they are navigable, regardless of who owns the ends.