In this paper, we introduce some new subclasses of multivalent analytic functions in the unit disc and investigate several inclusion relationships, radius problems, and some other interesting properties of p-valent functions which are defined here by means of a certain integral operator Qβ,pf(z). Mathematics Subject Classification 2010: 30C45, 30C50.

In this paper we define a new class of functions which are analytic and p-valent with negative coefficients, by using fractional differ-integral operators studied recently by authors. Characterization, distortion theorems and other interesting properties of this class of functions are studied. Some special cases of main results are also pointed out.

In this paper, we introduce a subclass of p -valent functions involving Cho-KwonSrivastava integral operator. We study some interesting results including inclusion relations, convoltion with convex functions and integral preserving property for this class. Mathematics subject classification (2010): 30C45, 30C50.

The authors establish certain results concerning the quasi-Hadamard product of analytic and p-valent functions with negative coefficients analogous to the results due to Vinod Kumar (J. Math. Anal. Appl. 113(1986), 230-234 and 126(1987), 70-77).

Using convolution, classes of p-valent functions with respect to symmetric conjugate points are introduced. Integral representation and closure properties under convolution of general classes with respect to (2j, k) symmetric points are investigated. AMS (MOS) Subject Classification Codes: 30C45

By applying certain integral operators to p-valent functions we define a comprehensive family of analytic functins. The subordinations properties of this family is studied, which in certain special cases yield some of the previously obtained results.

By making use of the method of differential subordination, we investigate some properties of certain classes of p-valent meromorphic functions, which are defined by means of a certain operator .

The aim of this paper is to study the problem of coefficient bounds for a newly defined subclass of p-valent analytic functions. Many known results appear as special consequences of our work.

In this paper, a new subclass ∑α p,β(η, δ, μ, λ) of p−valent meromorphic functions defined by certain integral operator is introduced. Some interesting properties of this class are obtained.

In this paper, we investigate some interesting subordination, superordination and sandwich results for p-valent functions, in the open unit disc U , which are acted upon by a new integral operator . , , m p J β α