Open AccessCofficient estimates for a general Subclass of bi-univalent functions
Author(s) -
Khosrow Hosseinzadeh
Publication year - 2022
Publication title -
boletim da sociedade paranaense de matemática
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.347
H-Index - 15
eISSN - 2175-1188
pISSN - 0037-8712
DOI - 10.5269/bspm.51659
Subject(s) - subclass , lambda , unit disk , mathematics , combinatorics , univalent function , unit (ring theory) , sigma , class (philosophy) , discrete mathematics , pure mathematics , computer science , analytic function , physics , artificial intelligence , mathematics education , quantum mechanics , antibody , optics , immunology , biology
In this paper, we introduce and investigate an interesting subclass ${\cal{S}}^{h,p}_{\Sigma}(A,B,C,\lambda)$ of bi-univalent functions in the open unit disk $\mathbb{U}$. Furthermore, we find estimates on the $|a_2|$ and $|a_3|$ coefficients for functions in this subclass. The coefficient bounds presented here generalize some recent works of several earlier authors.