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Srivastava, Hari M.; Khan, Nazar; Bah, Muhtarr A.; Alahmade, Ayman; Tawfiq, Ferdous M. O.; Syed, Zainab

Fourth order Hankel determinants for certain subclasses of modified sigmoid-activated analytic functions involving the trigonometric sine function. (English) Zbl 07917611

J. Inequal. Appl. 2024, Paper No. 84, 18 p. (2024).

MSC:

30C45 Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.)
30C50 Coefficient problems for univalent and multivalent functions of one complex variable
30C80 Maximum principle, Schwarz’s lemma, Lindelöf principle, analogues and generalizations; subordination

Keywords:

analytic functions; univalent functions; Salagean differential operator; bounded turning functions; sine function; modified sigmoid activation function; Hankel determinants
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References:

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