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Acta Mathematica Vietnamica

A CERTAIN SUBCLASS OF P-VALENTLY ANALYTIC FUNCTIONS WITH NEGATIVE COEFFICIENTS OF COMPLEX ORDER

AJAB AKBARALLY, MASLINA DARUS

Abstract

The object of this paper is to show some properties of functions belonging to a subclass $M_p(A,B, b, n)$ (where $b$ is a complex number with $\mathrm{Re}(b) > 0$ and $A$ and $B$ are two arbitrary constants with $−1\leq B < A \leq 1)$. Coefficient estimates and some distortion theorems for this class of functions are found. Radii of close-to-convexity, starlikeness and convexity are derived. An application to fractional calculus is given.