Analytic and multivalent functions with complex coefficients and their certain subclasses

The aim of this thesis is to contribute to Analytic and Geometric Functions Theory by using some theories concerning convexity, starlikeness and close-to-convex of some analytic and multivalent functions. Because of this reason, at the begining, fundemental theorems and definitions concerning starlikeness, convexity and close- to-convexity of functions given and some of them proved. In this work, working content of analytic and multivalent functions and some of their classes was extended by using fractional derivative operator. Defined Ws{p', /i) and Vs[p', fi) families are subclasses of multivalent functions and two theorems which were introduced to analytic and geometric functions by these subclasses were derived and results entered to mathematical literature. Special forms of these theorems include other works published. Furthermore, by determining the relation between functions defined with some operators ( fractional integral operator, fractional derivative operator, ordinary derivative operator and ordinary integral operator ) and classes expressed above, some results derived. KEY WORDS: Unit Disk, analytic function, multivalent function, starlike func tion, convex function, close to convex function, fractional derivative, fractional in tegral, integral operator, complex inequalities.