Skip to main content
User Image

ريم خالد الحفظي

Associate Professor

Facility member

Sciences
مبنى 5 الدور الثالث مكتب 62
publication
Journal Article
2026

Improvement on Hankel determinant bounds for specific holomorphic functions

In recent years, researchers have extensively investigated the Hankel determinant, which consists of coefficients appearing in a holomorphic function's Taylor-Maclaurin series. Hankel matrices are widely used in Markov processes, non-stationary signals, and other mathematical disciplines. The aim of the current research article is to first improve the bounds of coefficient-related problems by employing the well-known Carath & eacute;odory function. The problems that we are going to improve were obtained by Tang et al. The sharp estimates of the most difficult problem of geometric function theory known as the third-order Hankel determinant are also contributed here. Zalcman and Fekete-Szeg & ouml; inequalities are also studied here for the defined family of holomorphic functions.

more of publication
publications

In this article, we applied the optimal auxiliary function method, which is a newly developed semi-numerical method widely used for complicated nonlinear partial differential equations in many…

by Muhammad Nawaz, Hakeem Ullah, Reem K. Alhefthi, Mehreen Fiza, Seham M. Al-Mekhlafi, Muhammad Arif
2025
publications

In recent years, researchers have extensively investigated the Hankel determinant, which consists of coefficients appearing in a holomorphic function's Taylor-Maclaurin series. Hankel matrices are…

by Tang, H, Abbas, M, Alhefthi, Reem K. , Arif, M
2026
publications

This paper concerns a nonhomogeneous singular fractional order system, with two frictional

damping terms. This system can be considered as a generalization of the so-called Timoshenko

by Said Mesloub and Reem K. Alhefthi
2023