Abstract
Honoring Stephan Ruscheweyh’s magnificent contributions to complex analysis in general and to geometric function theory in particular, the cover of this volume shows a (modified) phase plot of a Ruscheweyh derivative of the complex tangent function. In this note we sketch some background.
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Notes
The name was proposed by Al Amiri [2].
References
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Communicated by Doron Lubinsky.
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