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Turkish Journal of Mathematics

DOI

10.3906/mat-1710-106

Abstract

In this work with a different technique we obtain upper bounds of the functional $\left a_2a_4-a_3^2\right $ for functions belonging to a comprehensive subclass of analytic bi-univalent functions, which is defined by subordinations in the open unit disk. Moreover, our results extend and improve some of the previously known ones.

First Page

2798

Last Page

2808

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Mathematics Commons

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