Faber Polynomial Expansion for a New Subclass of Bi-univalent Functions Endowed with $(p,q)$ Calculus Operators

Yıl 2021, Cilt: 4 Sayı: 1, 17 - 24, 01.03.2021

Om P. Ahuja Asena Çetinkaya

https://doi.org/10.33401/fujma.831447

Öz

In this paper, we use the Faber polynomial expansion techniques to get the general Taylor-Maclaurin coefficient estimates for $|a_n|,\ (n\geq 4)$ of a generalized class of bi-univalent functions by means of $(p,q)-$calculus, which was introduced by Chakrabarti and Jagannathan. For functions in such a class, we get the initial coefficient estimates for $|a_2|$ and $|a_3|.$ In particular, the results in this paper generalize or improve (in certain cases) the corresponding results obtained by recent researchers.

Anahtar Kelimeler

Faber polynomial expansion, Bi-univalent functions, (p,q)-calculus

Kaynakça

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