Zobrazeno 1 - 10
of 284
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:
Journal of Function Spaces, Vol 2021 (2021)
The aim of the paper is twofold: we introduce new positive linear operators acting on continuous functions defined on a simplex and then estimate differences involving them and/or other known operators. The estimates are given in terms of moduli of s
Externí odkaz:
https://doaj.org/article/1e13f18b824e4947a64d87813ebcc431
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
Publikováno v:
Journal of Function Spaces, Vol 2020 (2020)
We consider a family Bn,ρc of operators which is a link between classical Baskakov operators (for ρ=∞) and their genuine Durrmeyer type modification (for ρ=1). First, we prove that for fixed n,c and a fixed convex function f, Bn,ρcf is decreasi
Externí odkaz:
https://doaj.org/article/9766858debb94b23a1bdd999471c8ead
Publikováno v:
Mathematics, Vol 10, Iss 3, p 309 (2022)
The present article proposes a methodology for modeling the evolution of stock market indexes for 2020 using geometric Brownian motion (GBM), but in which drift and diffusion are determined considering two states of economic conjunctures (states of t
Externí odkaz:
https://doaj.org/article/c7b87628726841ceb91eaf37901c787a