Geometric Properties of Some Generalized Mathieu Power Series inside the Unit Disk

Autor: Živorad Tomovski, Stefan Gerhold, Deepak Bansal, Amit Soni
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Axioms, Vol 11, Iss 10, p 568 (2022)
Druh dokumentu: article
ISSN: 2075-1680
DOI: 10.3390/axioms11100568
Popis: We consider two parametric families of special functions: One is defined by a power series generalizing the classical Mathieu series, and the other one is a generalized Mathieu type power series involving factorials in its coefficients. Using criteria due to Fejér and Ozaki, we provide sufficient conditions for these functions to be close-to-convex or starlike inside the unit disk, and thus univalent. One of our proofs is assisted by symbolic computation.
Databáze: Directory of Open Access Journals
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