On quasi-subordination for bi-univalency involving generalized distribution series associated with remodelled s-sigmoid function

In this paper, the authors investigate the bi-univalency of the generalized distribution series associated with quasi-subordination and remodelled s-sigmoid function. The early few coefficients are obtained to achieve our goal. The results obtained are new to the history of bi-univalency.

کلیدواژه ها:

Analytic function ، univalent function ، starlike function ، convex function ، quasi-subordination ، logistic sigmoid function ، s−sigmoid function