Starlike functions associated with $ \tanh z $ and Bernardi integral operator

IF 1.3 Q3 COMPUTER SCIENCE, THEORY & METHODS
Pratima Rai, A. Çetinkaya, Sushil Kumar
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引用次数: 1

Abstract

We determine the necessary and sufficient convolution conditions for the starlike functions on the open unit disk and related to some geometric aspects of the function \begin{document}$ \tanh z $\end{document}. We also determine sharp bounds on second and third order Hermitian-Toeplitz determinants for such functions. Further, we compute estimates on some initial coefficients and the Hankel determinants of third and fourth order. In addition, using the concept of Briot-Bouquet type differential subordination, we establish a subordination inclusion involving Bernardi integral operator.

星形函数关联$ \tanh z $和Bernardi积分算子
We determine the necessary and sufficient convolution conditions for the starlike functions on the open unit disk and related to some geometric aspects of the function \begin{document}$ \tanh z $\end{document}. We also determine sharp bounds on second and third order Hermitian-Toeplitz determinants for such functions. Further, we compute estimates on some initial coefficients and the Hankel determinants of third and fourth order. In addition, using the concept of Briot-Bouquet type differential subordination, we establish a subordination inclusion involving Bernardi integral operator.
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CiteScore
1.50
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