Badghaish, Abeer Omar
(2012)
Subordination And Convolution Of Multivalent Functions And Starlikeness Of Integral Transforms.
PhD thesis, Universiti Sains Malaysia.
Abstract
This thesis deals with analytic functions as well as multivalent functions de
�ned on the unit disk U. In most cases, these functions are assumed to be normalized,
either of the form
f(z) = z +
1X
k=2
akzk;
or
f(z) = zp +
1X
k=1
ak+pzk+p;
p a �xed positive integer. Let A be the class of functions f with the �rst normalization,
while Ap consists of functions f with the latter normalization. Five
research problems are discussed in this work.
First, let f(q) denote the qth derivative of a function f 2 Ap. Using the theory
of di�erential subordination, su�cient conditions are obtained for the following
di�erential chain to hold:
f(q)(z)
�(p; q)zp
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