In 2012, new classes of analytic functions on U×U¯ with coefficient holomorphic in U¯ were defined to give a approach the concepts strong differential subordination and superordination. Using those classes, extended Dziok–Srivastava operator is introduced this paper and, applying fractional integral operator, we obtain Dz−γHmlα1,β1 that was not previously studied using subordinations superordin...

In the present investigation, with motivation from pioneering work of Srivastava et al. [28], which in recent years actually revived study analytic and bi-univalent functions, we introduce subclasses T*?(n,?) T?(n,?) function class ? defined open unit disk U = {z C : |z| < 1g involving S?l?gean derivative operator Dn. Moreover, derive estimates on initial coefficients |a2| |a3| for functions...