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Sharp bound for the second Hankel determinant for a $q$-starlike function associated with the $q$-exponential function

UDC 517.5 We determine the sharp bound of the second-order Hankel determinant $H_{2,2}(f)$ and the coefficient functional for functions from the class of $q$-starlike functions $ \mathcal{S}^*(\mathcal{L},q)$ by refining the results obtained in [Srivastava et al., Upper bound of the third Hankel de...

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Bibliographic Details
Date:	2026
Main Author:	Kumar, Karri Sanjay
Format:	Article
Language:	English
Published:	Institute of Mathematics, NAS of Ukraine 2026
Online Access:	https://umj.imath.kiev.ua/index.php/umj/article/view/9106
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Journal Title:	Ukrains’kyi Matematychnyi Zhurnal
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