Fourth order Hankel determinants for certain subclasses of modified sigmoid-activated analytic functions involving the trigonometric sine function
DOI10.1186/S13660-024-03150-0zbMATH Open1546.30005MaRDI QIDQ6609620
Zainab Syed, Ferdous M. O. Tawfiq, Nazar Khan, Ayman Alahmade, H. M. Srivastava, Muhtarr A. Bah
Publication date: 24 September 2024
Published in: Journal of Inequalities and Applications (Search for Journal in Brave)
sine functionanalytic functionsunivalent functionsHankel determinantsSalagean differential operatorbounded turning functionsmodified sigmoid activation function
Special classes of univalent and multivalent functions of one complex variable (starlike, convex, bounded rotation, etc.) (30C45) Maximum principle, Schwarz's lemma, Lindelöf principle, analogues and generalizations; subordination (30C80) Coefficient problems for univalent and multivalent functions of one complex variable (30C50)
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