Third Hankel Determinant for the Class of Analytic Functions Defined by the Mathieu-Type Series Related to a Petal-Shaped Domain
摘要
We introduce a new subclass of analytic functions based on the Mathieu-type series related to a petal-shaped domain. We study the bounds of the initial coefficient estimates, the Fekete–Szegö inequality, and the Hankel determinants of orders two and three.