Classes of harmonic functions defined by  extended Sălăgean operator

J. Dziok

doi:10.37863/umzh.v73i1.78

J. Dziok Univ. Rzeszów, Poland

DOI: https://doi.org/10.37863/umzh.v73i1.78

Keywords: harmonic function, Sălăgean operator, subordinatio, extreme point, starlike function

Abstract

UDC 517.57

The object of the present paper is to investigate classes of harmonic functions defined by the extended Sălăgea operator.
By using the extreme points theory we obtain coefficients estimates and distortion theorems for these classes of functions.
Some integral mean inequalities are also pointed out.

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