Initial Coefficient Bounds for interesting Subclasses of Meromorphic and and Bi-Univalent Functions

Document Type : Research Paper


Department of Mathematics, Payame Noor University, Tehran, Iran


In this paper, we investigate an interesting subclass of univalent functions. Also, we introduce a new subclass of meromorphic bi-univalent functions. We obtain the estimates on the initial Taylor-Maclurin Coefficients for functions in the interesting subclass of meromorphically bi-univalent functions defined on $\Delta=\left\{z\in\Bbb C:~ 1<|z|<\infty\right\}$.


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  • Receive Date: 26 August 2021
  • Revise Date: 24 January 2022
  • Accept Date: 24 January 2022
  • First Publish Date: 30 January 2022