3 papers
math.CA2018
Universally starlike and Pick functions
Andrew Bakan, Stephan Ruscheweyh, Luis Salinas
Denote by the set of all non-constant Pick functions whose logarithmic derivatives also belong to the Pick class. Let be…
math.CA2016
More properties of the Ramanujan sequence
Andrew Bakan, Stephan Ruscheweyh, Luis Salinas
The Ramanujan sequence , defined as $$ θ_{0}= \frac{1}{2} \ , \ \ \ θ_{n} = \left(\ \ \frac{e^{n}}{2} - \sum_{k=0}^{n-1} \frac{n^{k}}{k !} \ \ \right) \cdot…
math.CA2008
A Note on Generating Functions for Hausdorff Moment Sequences
Oliver Roth, Luis Salinas, Stephan Ruscheweyh
For functions whose Taylor coefficients at the origin form a Hausdorff moment sequence we study the behaviour of for ( fixed).