Radius of Starlikeness for Classes of Analytic Functions

Kanika Khatter; See Keong Lee; V. Ravichandran

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arXiv · 2006.11744

Radius of Starlikeness for Classes of Analytic Functions

Kanika Khatter·See Keong Lee·V. Ravichandran

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Abstract

We consider normalized analytic function $f$ on the open unit disk for which either $\operatorname{Re} f(z)/g(z)>0$, $|f(z) /g(z) - 1|<1$ or $\operatorname{Re} (1-z^2) f(z) /z>0$ for some analytic function $g$ with $\operatorname{Re} (1-z^2) g(z) /z>0$. We have obtained the radii for these functions to belong to various subclasses of starlike functions. The subclasses considered include the classes of starlike functions of order $\alpha$, lemniscate starlike functions and parabolic starlike functions.

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BibTeX RIS

Kanika Khatter, See Keong Lee, V. Ravichandran. 2020-06-21. Radius of Starlikeness for Classes of Analytic Functions. https://arxiv.org/abs/2006.11744

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