Coefficient Functionals of Sakaguchi-Type Starlike Functions Involving Caputo-Type Fractional Derivatives Subordinated to the Three-Leaf Function

Kholood M. Alsager, Sheza M. El-Deeb (), Gangadharan Murugusundaramoorthy and Daniel Breaz
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Kholood M. Alsager: Department of Mathematics, College of Science, Qassim University, Buraydah 51452, Saudi Arabia
Sheza M. El-Deeb: Department of Mathematics, College of Science, Qassim University, Buraydah 51452, Saudi Arabia
Gangadharan Murugusundaramoorthy: Department of Mathematics, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore 632014, India
Daniel Breaz: Department of Mathematics, “1 Decembrie 1918” University of Alba Iulia, RO-510009 Alba Iulia, Romania

Mathematics, 2024, vol. 12, issue 14, 1-14

Abstract: A challenging part of studying geometric function theory is figuring out the sharp boundaries for coefficient-related problems that crop up in the Taylor–Maclaurin series of univalent functions. Using Caputo-type fractional derivatives to define the families of Sakaguchi-type starlike functions with respect to symmetric points, this article aims to investigate the first three initial coefficient estimates, the bounds for various problems such as Fekete–Szegő inequality, and the Zalcman inequalities, by subordinating to the function of the three leaves domain. Fekete–Szegő-type inequalities and initial coefficients for functions of the form H − 1 and ζ H ( ζ ) and 1 2 log H ζ ζ connected to the three leaves functions are also discussed.

Keywords: analytic functions; subordination; three-leaf function; Caputo-type fractional derivatives; convolution; coefficient inequalities; Fekete–Szeg? functional; Krushkal inequality (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2024
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