| Let σk(a) be the class of functions(?), regularin the punctured disk E={z:0<|z|<1} and satisfying Re(1+zf″(z)/f′(z))<-a(0≤a<1) for z∈ E. In this paper we obtain coefficient inequalities, distortion and closure Theorems for the class σk(a). Further we obtain the class preserving integral operator of the form F(z)=c∫01ucf(uz)du,(00 for the class σk(a). Conversely when F∈σk(a) the radius of convexity of f is obtained. |
