New subclasses of meromorphic bi-univalent functions by associated with subordinate
Publish Year: 1400
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJNAA-12-2_006
تاریخ نمایه سازی: 11 آذر 1401
Abstract:
In the present paper, we define two subclasses \Sigma(\lambda, \alpha, \beta), \Sigma_{\mathcal C}(\alpha, \beta) of meromorphic univalent functions and subclass \Sigma_{{\mathcal B},{\mathcal C}}(\alpha, \beta, \lambda) of meromorphic bi-univalent functions. Furthermore, we obtain estimates on the general coefficients |b_n|~(n \ge۱) for functions in the subclasses \Sigma(\lambda, \alpha, \beta), \Sigma_{\mathcal C}(\alpha, \beta) and estimates for the early coefficients of functions in subclass \Sigma_{{\mathcal B},{\mathcal C}}(\alpha, \beta, \lambda) by associated subordination. The results obtained in this paper would generalize and improve those in related works of several earlier authors.
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