Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Adam Lecko"'
Autor:
Marta Bogusławska-Tafelska, Adam Lecko
Publikováno v:
International Journal for Quality Research, Vol 16, Iss 1, Pp 279-284 (2022)
The paper theoretically explores the limitations of the statistical method. Specifically, we point to the inapplicability of statistics in the studies on living systems. Western interdisciplinary sciences, natural sciences and humanities, often analy
Externí odkaz:
https://doaj.org/article/22bef16046f346a19aba9af220a78a8e
Publikováno v:
Symmetry, Vol 15, Iss 4, p 875 (2023)
In this paper, we introduce and study the class of analytic functions in the unit disc, which are derived from Robertson’s analytic formula for starlike functions with respect to a boundary point combined with a subordination involving lemniscate o
Externí odkaz:
https://doaj.org/article/e9c08998917e429a9a12c11271ba1b4c
Publikováno v:
Journal of Function Spaces, Vol 2022 (2022)
In the present exploration, the authors define and inspect a new class of functions that are regular in the unit disc D≔ς∈ℂ:ς
Externí odkaz:
https://doaj.org/article/cb1b3525436743d2a378b8c7bc5ecadc
Publikováno v:
Symmetry, Vol 13, Iss 6, p 966 (2021)
In this paper we study a certain differential subordination related to the harmonic mean and its symmetry properties, in the case where a dominant is a linear function. In addition to the known general results for the differential subordinations of t
Externí odkaz:
https://doaj.org/article/e1bc473b38794cf387353d2d20602483
Autor:
Adam Lecko
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 2004, Iss 40, Pp 2133-2143 (2004)
Externí odkaz:
https://doaj.org/article/d258b0668f0840a9b7da391f78a726f0
Autor:
Adam Lecko
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 29, Iss 11, Pp 641-650 (2002)
The aim of this paper is to present an analytic characterization of the class of functions convex in the negative direction of the imaginary axis of order (α,β). The method of the proof is based on Julia's lemma.
Externí odkaz:
https://doaj.org/article/63aee45a23cc4d9082892867aa2c61a7
Publikováno v:
International Journal of Mathematics and Mathematical Sciences, Vol 23, Iss 2, Pp 109-117 (2000)
We establish that the differential subordinations of the forms p(z)+γzp′(z)≺h(A1,B1;z) or p(z)+γzp′(z)/p(z)≺h(A2,B2;z) implies p(z)≺h(A,B;z), where γ≥0 and h(A,B;z)=(1+Az)/(1+Bz) with −1≤B
Externí odkaz:
https://doaj.org/article/a459f2ff67f645f395715124a84fda43
Autor:
Adam Lecko
Publikováno v:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics. :1-14
In this paper we introduce and examine the differential subordination of the form \[ p(z)+zp'(z)\varphi(p(z),zp'(z))\prec h(z),\quad z\in\mathbb{D}:=\{z\in\mathbb{C}:|z| where $h$ is a convex univalent function with $0\in h(\mathbb {D}).$ The proof o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b27bc92cea063f38cdc912c0cffc5601
https://doi.org/10.1017/prm.2023.9
https://doi.org/10.1017/prm.2023.9
Autor:
Bogumiła Kowalczyk, Adam Lecko
Publikováno v:
Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas. 117
Sharp bounds are given for the second Hankel determinant of the logarithmic coefficients of strongly starlike and strongly convex functions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95eb5138267b135b7182529bbf0ad506
https://doi.org/10.1007/s13398-023-01427-5
https://doi.org/10.1007/s13398-023-01427-5
Autor:
Adam Lecko, Barbara Śmiarowska
Publikováno v:
Bulletin of the Iranian Mathematical Society. 48:3077-3098
The sharp lower and upper bounds of the Hermitian Toeplitz determinants of the second and third order for certain close-to-star functions are computed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab0b0fe451926bb2ba0524a431840c57
https://doi.org/10.1007/s41980-022-00687-y
https://doi.org/10.1007/s41980-022-00687-y