On initial coefficient inequalities for certain new subclasses of bi-univalent functions | ||
Journal of the Egyptian Mathematical Society | ||
Volume 25, Issue 3, 2017, Pages 291-293 PDF (272.3 K) | ||
DOI: 10.1016/j.joems.2017.04.001 | ||
Abstract | ||
In the present paper, we introduce two interesting subclasses of the class of bi-univalent functions defined on the open unit disk U and obtain improved estimates on the initial coefficients |a2|, |a3| and |a4| for the functions in these subclasses. | ||
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