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Hankel determinants for new subclasses of analytic functions related to a shell shaped region
Published in MDPI AG
Volume: 8
Issue: 6
Using the operator defined by Carlson and Shaffer, we defined a new subclass of analytic functions defined by a subordination relation to the shell shaped function. We determined estimate bounds of the four coefficients of the power series expansions, we gave upper bound for the Fekete-Szeg[double acute accent]o functional and for the Hankel determinant of order two for. © 2020 by the authors.
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PublisherMDPI AG
Open AccessYes