Results 91 to 100 of about 1,000,066 (146)

On the Convergence of a Family of Chlodowsky Type Bernstein-Stancu-Schurer Operators

Journal of Function Spaces, 2018
We construct a new family of univariate Chlodowsky type Bernstein-Stancu-Schurer operators and bivariate tensor product form. We obtain the estimates of moments and central moments of these operators, obtain weighted approximation theorem, establish ...
Lian-Ta Shu, Guorong Zhou, Qing-Bo Cai
doaj   +1 more source

Dilworth's Theorem Revisited, an Algorithmic Proof [PDF]

Dilworth's theorem establishes a link between a minimal path cover and a maximal antichain in a digraph.A new proof for Dilworth's theorem is given. Moreover an algorithm to find both the path cover and the antichain, as considered in the theorem, is ...
Potharst, R., Pijls, W.H.L.M.
core  

On certain q-Baskakov-Durrmeyer operators

Le Matematiche, 2011
In this paper we introduce a q−analogue of Baskakaov-beta operators. We establish Voronovskaja-type theorem and obtain local error estimates by these q−operators in uniform norm by using the Ditzian-Totik weighted modulus of smoothness for 0 < q < ...
Asha R. Gairola, Girish Dobhal, Karunesh Kumar Singh   +2 more
doaj  

A Study of Szász–Durremeyer-Type Operators Involving Adjoint Bernoulli Polynomials

Mathematics
This research work introduces a connection of adjoint Bernoulli’s polynomials and a gamma function as a sequence of linear positive operators. Further, the convergence properties of these sequences of operators are investigated in various functional ...
Nadeem Rao, Mohammad Farid, Rehan Ali
doaj   +1 more source

Quantitative Voronovskaja formulae for generalized Durrmeyer sampling type series

, 2016
We give for generalized Durrmeyer type series and their linear combinations, quantitative Voronovskaja formulae in terms of the classical Peetre K-functional.
Carlo Bardaro, BARDARO, Carlo, Ilaria Mantellini, FAINA, Loris, Loris Faina, MANTELLINI, Ilaria   +5 more
core   +1 more source

A proof of the four-colour theorem

, 2013
The four-colour problem remained unsolved for more than a hundred years has played a role of the utmost importance in the development of graph theory. The four-colour theorem was confirmed in 1976, which is not completely satisfied due to: i) part of the
Xing, Jing Tang
core   +1 more source

Approximation Results: Szász–Kantorovich Operators Enhanced by Frobenius–Euler–Type Polynomials

Axioms
This research focuses on the approximation properties of Kantorovich-type operators using Frobenius–Euler–Simsek polynomials. The test functions and central moments are calculated as part of this study.
Nadeem Rao, Mohammad Farid, Mohd Raiz
doaj   +1 more source

Approximation using Jakimovski–Leviatan operators of Durrmeyer type with 2D-Appell polynomials

Journal of Inequalities and Applications
This article delves into Jakimovski–Leviatan–Durrmeyer type operators based on 2D-Appell polynomials. The investigation initiates by exploring the Korovkin-type approximation theorem and its convergence rates, employing both the traditional modulus of ...
Manoj Kumar, Nusrat Raza, M. Mursaleen
doaj   +1 more source

Ibragimov–Gadjiev operators preserving exponential functions

Journal of Inequalities and Applications
In this paper, a modification of general linear positive operators introduced by Ibragimov and Gadjiev in 1970 is constructed. It is shown that this modification preserves exponential mappings and also contains modified Bernstein-, Szász- and Baskakov ...
Serap Herdem
doaj   +1 more source

Approximation by modified Kantorovich-Stancu operators. [PDF]

J Inequal Appl, 2018
Opriş AA.
europepmc   +1 more source