International Journal of Mathematics and Mathematical Sciences
Volume 15 (1992), Issue 1, Pages 143-148
doi:10.1155/S0161171292000164

Some results on certain subclasses of analytic functions involving generalized hypergeometric functions and Hadamard product

Abstract

By using a certain linear operator defined by a Hadamard product or convolution, several interesting subclasses of analytic functions in the unit disc are introduced and some unifying relationships between them are established. A variety of characterization results involving a certain functional and some general functions of hypergeometric type are investigated for these classes.