On Univalent Functions With Negative Coefficients by Using Generalized SÂlÂgean Operator


Abdul Rahman S. Juma, S. R. Kulkarni




In this paper we have introduced a subclass $\mathcal{AR}(n,\xi,\alpha,\beta,\lambda)$ of univalent functions with negative coefficients defined by Salagean operator $\mathcal D_n$. We have obtained sharp results for coefficient estimates, distortion and closure bounds, Hadamard product and other results.