Sharp Coefficient Problems of Functions with Bounded Turnings Subordinated by Sigmoid Function
نویسندگان
چکیده
This study deals with analytic functions bounded turnings, defined in the disk Od=z:z<1. These are subordinated by sigmoid function 21+e−z and their class is denoted BTSg. Sharp coefficient inequalities, including third Hankel determinant for BTSg, were investigated here. The same was also included logarithmic coefficients related to of
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ژورنال
عنوان ژورنال: Mathematics
سال: 2022
ISSN: ['2227-7390']
DOI: https://doi.org/10.3390/math10203862