Kowalczyk, Bogumiła; Lecko, Adam; Thomas, Derek K. The sharp bound of the third Hankel determinant for starlike functions. (English) Zbl 1502.30052 Forum Math. 34, No. 5, 1249-1254 (2022). MSC: 30C45 30C50 PDFBibTeX XMLCite \textit{B. Kowalczyk} et al., Forum Math. 34, No. 5, 1249--1254 (2022; Zbl 1502.30052) Full Text: DOI
Kowalczyk, Bogumiła; Lecko, Adam Second Hankel determinant of logarithmic coefficients of convex and starlike functions. (English) Zbl 1492.30040 Bull. Aust. Math. Soc. 105, No. 3, 458-467 (2022). MSC: 30C45 30C50 PDFBibTeX XMLCite \textit{B. Kowalczyk} and \textit{A. Lecko}, Bull. Aust. Math. Soc. 105, No. 3, 458--467 (2022; Zbl 1492.30040) Full Text: DOI
Kowalczyk, Bogumiła; Lecko, Adam The sharp bound of the third Hankel determinant for functions of bounded turning. (English) Zbl 1476.30055 Bol. Soc. Mat. Mex., III. Ser. 27, No. 3, Paper No. 69, 13 p. (2021). MSC: 30C45 30C50 PDFBibTeX XMLCite \textit{B. Kowalczyk} and \textit{A. Lecko}, Bol. Soc. Mat. Mex., III. Ser. 27, No. 3, Paper No. 69, 13 p. (2021; Zbl 1476.30055) Full Text: DOI
Kowalczyk, Bogumiła; Lecko, Adam; Śmiarowska, Barbara Sharp inequalities for Hermitian Toeplitz determinants for strongly starlike and strongly convex functions. (English) Zbl 1468.30031 J. Math. Inequal. 15, No. 1, 323-332 (2021). MSC: 30C45 30C50 PDFBibTeX XMLCite \textit{B. Kowalczyk} et al., J. Math. Inequal. 15, No. 1, 323--332 (2021; Zbl 1468.30031) Full Text: DOI
Jastrzȩbski, Piotr; Kowalczyk, Bogumiła; Kwon, Oh Sang; Lecko, Adam; Sim, Young Jae Hermitian Toeplitz determinants of the second and third-order for classes of close-to-star functions. (English) Zbl 1446.30027 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 4, Paper No. 166, 14 p. (2020). MSC: 30C45 30C50 PDFBibTeX XMLCite \textit{P. Jastrzȩbski} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 4, Paper No. 166, 14 p. (2020; Zbl 1446.30027) Full Text: DOI