Bounds of third and fourth Hankel determinants for a generalized subclass of bounded turning functions subordinated to sine function
DOI:
https://doi.org/10.24193/subbmath.2024.4.06Keywords:
Bounded turning functions, Hankel determinant, analytic functions, coefficient inequalitiesAbstract
The objective of this paper is to investigate the bounds of third and fourth Hankel determinants for a generalized subclass of bounded turning functions associated with sine function, in the open unit disc. The results are also extended to two-fold and three-fold symmetric functions. This investigation will generalize the resuls of some earlier works.
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