M. Tahir, N. Khan, Q. Z. Ahmad, B. Khan, Gul Mehtab Khan
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引用次数: 2
Abstract
The main objective of this investigation is to introduce certain new subclasses of the class $Sigma $ of bi-univalent functions by using concept of conic domain. Furthermore, we find non-sharp estimates on the first two Taylor-Maclaurin coefficients $ left vert a_{2}right vert $ and $left vert a_{3}right vert $ for functions in these new subclasses. We consider various corollaries and consequences of our main results. We also point out relevant connections to some of the earlier known developments.
本文的主要目的是利用二次域的概念,引入双一价函数类σ $的几个新的子类。此外,我们发现了这些新子类中函数的前两个Taylor-Maclaurin系数$left vert a_{2}right vert $和$left vert a_{3}right vert $的非尖锐估计。我们考虑主要结果的各种推论和后果。我们还指出了与一些早期已知发展的相关联系。