Second Hankel Determinants for Some Subclasses of Biunivalent Functions Associated with Pseudo-Starlike Functions

Abstract

We introduce second Hankel determinant of biunivalent analytic functions associated with -pseudo-starlike function in the open unit disc Δ subordinate to a starlike univalent function whose range is symmetric with respect to the real axis.

Coefficient Inequalities for Certain Subclass of Starlike Function with respect to Symmetric points related to q-exponential Function

“…Using a indeed close p, valent function the growth rate of the 2nd Hankel determinant was calculated by Shrigan [15] in 2022. Other researchers like Janteng et al [16,17], Bansal [18], Lee et al [19], Lei et al [20], Rain et al [21], Rajya et al [22], Zaprawa [23] introduced the coefficient of the function 𝑓𝑓 that belong to the sub-class S of univalent function or to its subclasses the upper-bound of the Hankel determinant for 𝑘𝑘 . = 2, 𝑐𝑐 .…”

Third Hankel Determinant for A Class of Functions with Respect to Symmetric Points Associated with Exponential Function

“…The maximum value of H 2 (2)has been investigated by several authors. For instance the reader can see the work initiated by Hayman [13], Noonan and Thomas [29], Janteng et al ( [14], [15]), Bansal [5], Lee et al [20], Liu et al [23], Raina et al [38], Ohran et al [31], Laxmi and Sharma [18], Rǎducanu and Zaprawa [37].Very recently, Zaprawa [47]…”