ON INVERSES OF THIRD HANKEL DETERMINANT INVOLVING SYMMETRIC AND CONJUGATE POINTS

After thorough investigations, the authors observed that the third-order Hankel determinant for inverses associated with the symmetric and conjugate points have not appeared in print. This prompted the authors to investigate the third-order Hankel determinant for inverses for the classes and using Gelova and Tuneski’s approach. This work establishes new upper bounds for the third-order Hankel determinant for these classes of inverse functions.