A New Criterion for Multivalent Starlike Functions
نویسندگان
چکیده
The main purpose of the present paper is to derive a new criterion for mul-tivalent starlike functions by applying Jack's lemma.
منابع مشابه
On Some Classes of Multivalent Starlike Functions
Classes of multivalent functions analogous to certain classes of univalent starlike functions are defined and studied. Estimates on coefficients and distortion are made, using a variety of techniques. 1. Let St denote the class of all functions/(z) = z + . . . analytic, univalent and starlike in the unit disc U. Such functions satisfy the condition Re(z/'(z)//(z)) >0,zGU. The problem of definin...
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