Maslina Darus and Khalifa Al-Shaqsi
Differential Sandwich Theorems with Generalised Derivative Operator
149 - 152
2008
2
2
International Journal of Mathematical and Computational Sciences
https://publications.waset.org/pdf/13046
https://publications.waset.org/vol/14
World Academy of Science, Engineering and Technology
In this paper, a generalized derivatives operator n
λ,βf
introduced by the authors will be discussed. Some subordination and
superordination results involving this operator for certain normalized
analytic functions in the open unit disk will be investigated. Our
results extend corresponding previously known results.
Open Science Index 14, 2008