Fekete-Szegö and Second Hankel Determinant for a Class of p-Valent Functions Related to Modified Sigmoid Functions

In this paper, we study the initial coefficient bounds for a noval class of -valently analytic functions related to Sigmoid functions. Furthermore, the famous classical Fekete-Szegö inequality for this class are discussed. Conclusions: In this paper, We introduced and investigated the -univalent function for the class related to the to modified Sigmoid functions. Thus, we obtained second, third and fourth Taylor–Maclaurin coefficients of functions in this class. These results were an improvement on the estimates obtained in the recent studies.