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  • 1 University of Rzeszow, 35-310 Rzeszow, Poland
  • | 2 Menoufia University, Shebin Elkom 32511, Egypt
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Abstract

By making use of the pre-Schwarzian norm given by
f=supzU(1|z|2)|f(z)f(z)|,
we obtain such norm estimates for Hohlov operator of functions belonging to the class of uniformly convex functions of order α and type β. We also employ an entirely new method to generalize and extend the results of Theorems 1, 2 and 3 in . Finally, some inequalities concerning the norm of the pre-Schwarzian derivative for Dziok-Srivastava operator are also considered.
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