Differential sandwich theorems of symmetric points associated with Dziok-Srivastava operator
Copyright policy )Differential sandwich theorems of symmetric points associated with Dziok-Srivastava operator
\textit{K. Sakaguchi} [J. Math. Soc. Japan 11, 72--75 (1959; Zbl 0085.29602)] introduced the class of starlike functions with respect to symmetric points; these are normalized analytic functions \(f\) on the open unit disk satisfying \(\text{Re}(zf'(z)/(f(z)-f(-z))>0\). The authors give some applications of the theory of differential subordination and superordination to certain classes of functions with respect to symmetric points defined by making use of the Dziok-Srivastava convolution operator.
Symmetric points, Superordination, Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.), sandwich theorems, Sandwich theorems, Differential subordination, QA1-939, superordination, Dziok-Srivastava operator, symmetric points, differential subordination, Mathematics
Symmetric points, Superordination, Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.), sandwich theorems, Sandwich theorems, Differential subordination, QA1-939, superordination, Dziok-Srivastava operator, symmetric points, differential subordination, Mathematics
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