ON CERTAIN SUBCLASSES OF MEROMORPHICALLY MULTIVALENT CONVEX-FUNCTIONS

Making use of certain differential operators defined by Hadamard produ ct, the author studies, among other things, the subclasses J(n,p)(alph a)(0 less than or equal to alpha < p, p is an element of N = {1, 2, .. .}) of meromorphically multivalent convex functions in the open unit d isk U, where n is any integer greater than -p. The author shows in par ticular that J(n+1,)p(alpha) subset of J(n,p)(alpha) and considers the integrals of functions in J(n,p)(alpha). (C) 1995 Academic Press, Inc .