Reciprocal classes of p-valently spirallike and p-valently Robertson functions

摘要

For p-valently spirallike and p-valently Robertson functions in the open unit disk U,reciprocal classes S_p(α,β), and C_p(α,β) are introduced. The object of the present paper is to discuss some interesting properties for functions f(z) belonging to the classes S_p(α,β) and C_p(α,β).