Journal
FORUM MATHEMATICUM
Volume 34, Issue 1, Pages 137-156Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1515/forum-2021-0188
Keywords
Starlike functions; convex functions; sigmoid functions; Hankel determinants
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This paper deals with Hankel determinants for starlike and convex functions related to modified sigmoid functions, providing sharp bounds for the second and third Hankel determinants.
This paper is concerned with Hankel determinants for starlike and convex functions related to modified sigmoid functions. Sharp bounds are given for second and third Hankel determinants.
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