New results on coefficient estimates for subclasses of bi-univalent functions related by a new integral operator

Document Type : Research Paper


1 Department of Mathematics, College of Education for Girls, University of Kufa, Najaf, Iraq

2 Department of Mathematics, College of Science, University of Al-Qadisiyah, Diwaniyah, Iraq



In the present paper, we introduce two new subclasses of the function class $\sum$ of bi-univalent functions defined in the open unit disc $U$. Furthermore, we find estimates on the coefficients $|a_2|$ and $|a_3|$ for functions in these new subclasses.


Articles in Press, Corrected Proof
Available Online from 21 February 2023
  • Receive Date: 03 November 2022
  • Revise Date: 15 January 2023
  • Accept Date: 11 February 2023
  • First Publish Date: 21 February 2023