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Authors: GRIGORE ȘTEFAN SĂLĂGEAN, ÁGNES ORSOLYA PÁLL-SZABÓ.
Received 29 June 2021; Accepted 14 July 2021. Published Online: 2023-06-14
Published Print: 2023-07-30
pp. 269-278
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Making use of a modified Hadamard product or convolution of harmonic functions with varying arguments, combined with an integral operator, we study when these functions belong to a given class. Following an idea of U. Bednarz and J. Sokol we define the order of convolution consistence of three classes of functions and determine it for certain classes of harmonic functions with varying arguments defined using a convolution operator.
Mathematics Subject Classification (2010): 30C45, 30C50.
Keywords: Analytic functions with negative coefficients, univalent functions, extreme points, order of convolution consistence, starlikeness, convexity.
