  We study the flow (G(Qp); SG(Qp)) of trigonalizable algebraic group acting on
its type space, focusing on the problem raised in [17] of whether weakly
generic types coincide with almost periodic types if the group has global
definable f-generic types, equivalently whether the union of minimal subflows
of a suitable type space is closed. We will give a description of of f-generic
types of trigonalizable algebraic groups, and prove that every f-generic type
is almost periodic.
