Korean J. Math.  Vol 23, No 4 (2015)  pp.503-519
DOI: https://doi.org/10.11568/kjm.2015.23.4.503

Strong differential subordination and superordination of new generalized derivative operator

Anessa Oshah, Maslina Darus


In this work, certain classes of admissible functions are considered. Some strong differential subordination and superordination properties of analytic functions associated with new generalized derivative operator $\mathfrak{B}^{\mu,q,s}_{\lambda_{1},\lambda_{2},\ell,d}$ are investigated. New strong differential sandwich-type results associated with the generalized derivative operator are also given.


Analytic function, Derivative operator, Strong differential subordination, Strong differential superodination

Subject classification



The work here is supported by FRGSTOPDOWN/2013/ST06/UKM/01/1

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