International Journal of Mathematics and Mathematical Sciences
Volume 2005 (2005), Issue 1, Pages 125-131
doi:10.1155/IJMMS.2005.125

Integral properties of certain classes of analytic functions with negative coefficients

G.S. Sǎlǎgean

Faculty of Mathematics and Computer Science, Babes-Bolyai University, 1 M. Kogalniceanu Street, Cluj-Napoca, 3400, Italy

Abstract

We study integral properties of two classes of functions with negative coefficients defined using differential operators. The obtained results are sharp and they improve known results.