Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Ana Maria Acu"'
Publikováno v:
Mathematical Modelling and Analysis, Vol 26, Iss 3, Pp 395-410 (2021)
The present paper deals with positive linear operators which fix two functions. The transfer of a given sequence (Ln) of positive linear operators to a new sequence (Kn) is investigated. A general procedure to construct sequences of positive linear o
Externí odkaz:
https://doaj.org/article/46c1659a755e476fb8b6fd76a6bcb633
Publikováno v:
Axioms, Vol 12, Iss 3, p 228 (2023)
In a series of papers, most of them authored or co-authored by H. Gonska, several authors investigated problems concerning the composition and decomposition of positive linear operators defined on spaces of functions. For example, given two operators
Externí odkaz:
https://doaj.org/article/9bb146d485c647e6bb9a123c41b7e2de
Publikováno v:
Mathematics, Vol 11, Iss 4, p 805 (2023)
A certain discrete probability distribution was considered in [“A discrete probability distribution and some applications”, Mediterr. J. Math., 2023]. Its basic properties were investigated and some applications were presented. We now embed this
Externí odkaz:
https://doaj.org/article/c387c613797c4b8885ee5ed82c439601
Publikováno v:
Journal of Numerical Analysis and Approximation Theory, Vol 50, Iss 1 (2021)
The Bernstein-type operator of Aldaz, Kounchev and Render (2009) is discussed. New direct results in terms of the classical second order modulus as well as in a modification following Marsden and Schoenberg are given.
Externí odkaz:
https://doaj.org/article/7ab60dc394584d78a2e24032d8cf7383
Publikováno v:
Mathematics, Vol 10, Iss 16, p 2978 (2022)
Several papers, mainly written by J. de la Call and co-authors, contain modifications of classical sequences of positive linear operators to obtain new sequences converging to limits which are not necessarily the identity operator. Such results were
Externí odkaz:
https://doaj.org/article/1c79a36fefda43bd944562301837a6fb
Publikováno v:
Mathematics, Vol 10, Iss 8, p 1327 (2022)
The paper is devoted to the existence, uniqueness and nonuniqueness of positive solutions to nonlinear algebraic systems of equations with positive coefficients. Such systems appear in large numbers of applications, such as steady-state equations in
Externí odkaz:
https://doaj.org/article/5c7cb4b9112a4bd3bc807ccffcb33420
Autor:
Ana Maria Acu, Gancho Tachev
Publikováno v:
Symmetry, Vol 13, Iss 11, p 2018 (2021)
In this paper, we construct a new variant of the classical Szász–Mirakyan operators, Mn, which fixes the functions 1 and eax,x≥0,a∈R. For these operators, we provide a quantitative Voronovskaya-type result. The uniform weighted convergence of
Externí odkaz:
https://doaj.org/article/37642d2e5d1941df856ee397466ddd72
Publikováno v:
Mathematics, Vol 9, Iss 17, p 2051 (2021)
Some classical operators (e.g., Bernstein) preserve the affine functions and consequently interpolate at the endpoints. Other classical operators (e.g., Bernstein–Durrmeyer) have been modified in order to preserve the affine functions. We propose a
Externí odkaz:
https://doaj.org/article/abab975852434bb09804481dc78ad0f8
Publikováno v:
Symmetry, Vol 13, Iss 8, p 1392 (2021)
We consider positive linear operators having the same fundamental functions and different functionals in front of them. For differences involving such operators, we obtain Voronovskaja-type quantitative results. Applications illustrating the theoreti
Externí odkaz:
https://doaj.org/article/8fd15bda950c4fc6bb0898d4ec25252b
Publikováno v:
Mathematics, Vol 8, Iss 11, p 2056 (2020)
We consider a probability distribution p0(x),p1(x),… depending on a real parameter x. The associated information potential is S(x):=∑kpk2(x). The Rényi entropy and the Tsallis entropy of order 2 can be expressed as R(x)=−logS(x) and T(x)=1−S
Externí odkaz:
https://doaj.org/article/37569925d437449fabfc593b6e7e97a2