On Certain Multivalent Functions with Negative Coefficients Defined by Using a Differential Operator


In this paper, we introduce the subclass Sj(n, p, q, α) of analytic and p-valent functions with negative coefficients defined by new operator Dn p . In this paper we give some properties of functions in the class Sj(n, p, q, α) and obtain numerous sharp results including (for example) coefficient estimates, distortion theorem, radii of close-to-convexity… (More)


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