Results 41 to 50 of about 1,181,159 (209)

Approximation by Jakimovski–Leviatan-beta operators in weighted space

open access: yesAdvances in Difference Equations, 2020
The main purpose of this article is to introduce a more generalized version of Jakimovski–Leviatan-beta operators through the Appell polynomials. We present some uniform convergence results of these operators via Korovkin’s theorem and obtain the rate of
M. Nasiruzzaman, M. Mursaleen
doaj   +1 more source

The Weighted Ambrosio--Tortorelli Approximation Scheme [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2017
The Ambrosio-Tortorelli approximation scheme with weighted underlying metric is investigated. It is shown that it Γ-converges to a Mumford-Shah image segmentation functional depending on the weight $ωdx$, where $ω\in SBV(Ω)$, and on its value $ω^-$.
Irene Fonseca, Pan Liu 0004
openaire   +3 more sources

Approximation theory for weighted Sobolev spaces on curves [PDF]

open access: yes, 2001
17 pages, no figures.-- MSC2000 codes: 41A10, 46E35, 46G10.MR#: MR1882649 (2003c:42002)In this paper we present a definition of weighted Sobolev spaces on curves and find general conditions under which the spaces are complete.
Pestana Galván, Domingo   +6 more
core   +1 more source

Automated analysis of weighted voting games

open access: yes, 2011
Weighted voting games (WVGs) are an important mechanism for modeling scenarios where a group of agents must reach agreement on some issue over which they have different preferences.
Jennings, Nick   +8 more
core   +2 more sources

Approximation by weighted means of Walsh-Fourier series

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
We study the rate of approximation to functions in Lp and, in particular, in Lip(α,p) by weighted means of their Walsh-Fourier series, where α>0 and 1≤p≤∞.
F. Móricz, B. E. Rhoades
doaj   +1 more source

Numerical Approach for the Frequency-Weighted Hankel-Norm Approximation [PDF]

open access: yes, 2001
We derive new projection formulas for the model reduction method based on the frequency-weighted Hankel norm approximation (FWHNA). These formulas extend the applicability of the FWHNA method to frequency weights expressed as antistable right/left ...
Varga, Andras
core  

Approximating Polynomials for Functions of Weighted Smirnov-Orlicz Spaces

open access: yesJournal of Function Spaces and Applications, 2012
Let 𝐺0 and 𝐺∞ be, respectively, bounded and unbounded components of a plane curve Γ satisfying Dini's smoothness condition. In addition to partial sum of Faber series of 𝑓 belonging to weighted Smirnov-Orlicz space 𝐸𝑀,𝜔 (𝐺0), we prove that interpolating ...
Ramazan Akgün
doaj   +1 more source

Some Applications of New Modified q-Integral Type Operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2015
We introduce a new sequence of q-integral operators. We show that it is a weighted approximation process in the polynomial space of continuous functions defined on unit interval.
R. P. Pathak, Shiv Kumar Sahoo
doaj   +1 more source

Multivariate Approximation Theorems in Weighted Lorentz Spaces [PDF]

open access: yes, 2015
We consider trigonometric polynomial approximation problems in the multivariate weighted Lorentz spaces. In particular, we prove direct and converse theorems for trigonometric approximation in the multivariate weighted Lorentz spaces with ...
Yurt, Hasan, Guven, Ali
core   +1 more source

Approximation properties of a new family of Gamma operators and their applications

open access: yesAdvances in Difference Equations, 2021
The present paper introduces a new modification of Gamma operators that protects polynomials in the sense of the Bohman–Korovkin theorem. In order to examine their approximation behaviours, the approximation properties of the newly introduced operators ...
Reyhan Özçelik   +3 more
doaj   +1 more source

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