Inclusion and Neighborhood Properties of a Certain Subclasses of $p$-Valent Functions With Negative Coefficients


R. M. El-Ashwah




By means of Ruscheweyh derivative operator, we introduced and investigated two new subclasses of $p$-valent analytic functions. The various results obtained here for each of these function class include coefficient bounds and distortion inequalities, associated inclusion relations for the $(n,\theta)$-neighborhoods of subclasses of analytic and multivalent functions with negative coefficients, which are defined by means of nonhomogeneous differential equation.