For two holomorphic functions in the unit disk and the Hadamard product (or convolution ) is defined as Let denote the generalized hypergeometric function with , , , . Very special subclasses of holomorphic functions , , , defined by convolution of with and subordinate to , , are studied.
(They satisfy moreover the condition or , .) The necessary and sufficient conditions in the terms of coefficients for to be in the class under consideration are determined. Some distortion theorems and the radii of convexity and starlikeness are found.