Bogumiła Kowalczyk

THE SHARP BOUND FOR THE HANKEL DETERMINANT OF THE THIRD KIND FOR CONVEX FUNCTIONS

Bogumiła Kowalczyk, Adam Lecko, Young Jae Sim · Bulletin of the Australian Mathematical Society · 2018 · 180 citations · Full text

Spectral Theory, Engineering, Orthogonal Polynomial +7

Some coefficient inequalities related to the Hankel determinant for strongly starlike functions of order alpha

Nak Eun Cho, Bogumiła Kowalczyk, Oh Sang Kwon et al. · Journal of Mathematical Inequalities · 2017 · 77 citations · Full text

Spectral Theory, Engineering, Riemann-hilbert Problem +7

The Bounds of Some Determinants for Starlike Functions of Order Alpha

N. E. Cho, Bogumiła Kowalczyk, Oh Sang Kwon et al. · Bulletin of the Malaysian Mathematical Sciences Society · 2017 · 74 citations

Spectral Theory, Engineering, Generalized Function +7

SECOND HANKEL DETERMINANT OF LOGARITHMIC COEFFICIENTS OF CONVEX AND STARLIKE FUNCTIONS

Bogumiła Kowalczyk, Adam Lecko · Bulletin of the Australian Mathematical Society · 2021 · 61 citations · Full text

Spectral Theory, Univalent Functions, Engineering +10

SHARP BOUNDS OF SOME COEFFICIENT FUNCTIONALS OVER THE CLASS OF FUNCTIONS CONVEX IN THE DIRECTION OF THE IMAGINARY AXIS

Nak Eun Cho, Bogumiła Kowalczyk, Adam Lecko · Bulletin of the Australian Mathematical Society · 2019 · 54 citations · Full text

Spectral Theory, Engineering, Riemann-hilbert Problem +12