Transactions of the American Mathematical Society, Vol. 192 (May, 1974), pp. 285-292 (8 pages) The closed convex hull and extreme points are obtained for the functions which are convex, starlike, and ...

We show that, largely speaking, exponential families are extreme point models in the sense of Lauritzen (1974, 1982, 1984), except that in some cases degenerate measures shall be added. The results ...