Integral transforms for logharmonic mappings. (2021). Arbeláez, H.; Bravo, V.; Hernández, R.; Sierra, W.; Venegas, O.

Abstract:

Bieberbach’s conjecture was very important in the development of geometric function theory, not only because of the result itself, but also due to the large amount of methods that have been developed in search of its proof. It is in this context that the integral transformations of the type fα(z)=∫z0(f(ζ)/ζ)αdζfα(z)=∫0z(f(ζ)/ζ)αdζ or Fα(z)=∫z0(f′(ζ))αdζFα(z)=∫0z(f′(ζ))αdζ appear. In this note we extend the classical problem of finding the values of α∈Cα∈C for which either fαfα or FαFα are univalent, whenever f belongs to some subclasses of univalent mappings in DD, to the case of logharmonic mappings by considering the extension of the shear construction introduced by Clunie and Sheil-Small in (Clunie and Sheil-Small in Ann. Acad. Sci. Fenn., Ser. A I 9:3–25, 1984) to this new scenario.

Keywords: Integral transform; Logharmonic mappings; Shear construction; Univalent mappings

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