Differential subordinations and superordinations results of analytic univalent functions using the El-Deeb-Lupas operator

Document Type : Research Paper


1 Department of Mathematics, College of Computer Science and Mathematics, University of Mosul, Ninawaa, Iraq

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



In the present paper, we discuss some differential subordinations and superordinations results for a subclass of analytic univalent functions in the open unit disk U using El-Deeb –Lupa's operator $\mathcal{H}^{n}_{\lambda,\tau}$. Also, we study some sandwich theorems.


Articles in Press, Corrected Proof
Available Online from 27 February 2023
  • Receive Date: 17 November 2022
  • Revise Date: 29 December 2023
  • Accept Date: 19 February 2023
  • First Publish Date: 27 February 2023