Open AccessCertain subclasses of analytic and bi-univalent functions involving the q-derivative operator
Author(s) -
Bulut Serap
Publication year - 2017
Publication title -
communications faculty of science university of ankara series a1mathematics and statistics
Language(s) - English
Resource type - Journals
ISSN - 1303-5991
DOI - 10.1501/commua1_0000000780
Subject(s) - operator (biology) , derivative (finance) , mathematics , analytic function , univalent function , pure mathematics , algebra over a field , discrete mathematics , chemistry , biochemistry , repressor , transcription factor , financial economics , economics , gene
In this paper, we introduce and investigate two new subclasses H Σ and H q Σ (β) of analytic and bi-univalent functions in the open unit disk U. For functions belonging to these classes, we obtain estimates on the first two Taylor-Maclaurin coeffi cients |a2| and |a3| .
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