2025 : 10 : 14

Samira Rahrovi

Academic rank: Assistant Professor
ORCID:
Education: PhD.
ScopusId:
HIndex: 0/00
Faculty: Faculty of Basic Sciences
Address:
Phone: 04137745000

Research

Title
THE BEHAVIOR OF STARLIKE FUNCTIONS EXTERIOR OF PARABOLA
Type
JournalPaper
Keywords
Starlikeness, convexity; majoriziation problem; coecient estimates; Fekete-Szego problem; logarithmic coeffcients; pre-Schwarzian norm.
Year
2023
Journal HOUSTON JOURNAL OF MATHEMATICS
DOI
Researchers Samira Rahrovi ، Hossein Piri ، Rahim Kargar

Abstract

In the present paper a new subclass of the starlike functions $f$ analytic in the open unit disc $\Delta$, denoted by $\mathcal{S}^*_p$ normalized by $f(0)=0=f'(0)-1$ and satisfying \begin{equation*} \left(\frac{zf'(z)}{f(z)}-1\right)\prec \frac{z-tz^2}{(1-z)^2}\quad(t\in[0,1]), \end{equation*} where $"\prec"$ is the subordination relation, are introduced. Some properties of the class $\mathcal{S}^*_p$ including the radius of starlikeness and convexity of functions $f\in\mathcal{S}^*_p$, majoriziation problem, initial coefficient estimates, Fekete-Szeg\"{o} problem and estimation of initial logarithmic coefficients are investigated.