The object of the present paper is to investigate some inclusion relations and other interesting properties for certain classes of p-valent functions involving generalized Srivastava-Attiya operator by using the principle of differential subordination. MSC: 30C45

Apart from being a vital and exciting field in mathematics with interesting results, projective spaces have various applications in design theory, coding theory, physics, combinatorics, number theory and extremal combinatorial problems. In this paper, we consider real, complex and quaternion projective spaces. We focus on the geometric feature of the sectional curvatures. We first study the real and complex projective spaces. We prove that their sectional curvatures are constant. Then, we consider the quaternion projective space. Specifically, we prove that the quaternion projective space has a positive constant sectional curvature. We also determine the pinching constant for the complex and quaternion projective spaces.

In this paper we consider the class functions with a fixed point The aim of the present paper is to drive several interesting properties as coefficient estimates, distortion M S ( , , c).The q    theorems, radii of starlikeness and convexity and closure theorems of f (z) in the class results are generalized to families with finitely many fixed coefficients

In this paper, we obtain some subordination and superordination-preserving results of the generalized Srivastava-Attyia operator. Sandwichtype result is also obtained.

The purpose of this paper is to derive some subordination, superordination and sandwich results, which are connected by new di¤erential operator D m p;l; :