# SANDWICH THEOREMS FOR HIGHER-ORDER DERIVATIVES OF p-VALENT FUNCTIONS DEFINED BY CERTAIN LINEAR OPERATOR

• Aouf, Mohamed K. (Department of Mathematics Faculty of Science Mansoura University) ;
• Seoudy, Tamer M. (Department of Mathematics Faculty of Science Fayoum University)
• Published : 2011.05.31

#### Abstract

In this paper, we obtain some applications of first order differential subordination and superordination results for higher-order derivatives of p-valent functions involving certain linear operator. Some of our results improve and generalize previously known results.

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#### Cited by

1. Sandwich theorems for higher-order derivatives of $$p$$ -valent functions defined by certain linear operator vol.25, pp.2, 2014, https://doi.org/10.1007/s13370-012-0127-1