Abstract
By using the Ruscheweyh operator $D^n f(z)$, $z\in U$, we obtain sharp superordinations results related to some normalized holomorphic functions in the unit disk $U$.
Citation
Gh. OROS. Georgia Irina OROS. "Differential superordination defined by Ruscheweyh derivative." Hokkaido Math. J. 36 (1) 1 - 8, February 2007. https://doi.org/10.14492/hokmj/1285766652
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