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This article provides a power series summability based Korovkin type approximation theorem for any fuzzy sequence of positive linear operators. Using the notion of fuzzy modulus of smoothness, we also derive an associated approximation…

综合数学 · 数学 2022-02-07 Behar Baxhaku , Purshottam Narain Agrawal , Rahul Shukla

The goal of this note is to consider Liouville type theorem for p-Laplacian type operators. In particular guided by the Laplacian case one establishes analogous results for the p-Laplacian and operators of this type.

偏微分方程分析 · 数学 2024-11-15 Michel Chipot , Daniel Hauer

We establish a version of the Beurling-Pollard theorem for operator synthesis and apply it to derive some results on linear operator equations and to prove a Beurling-Pollard type theorem for Varopoulos tensor algebras. Additionally we…

泛函分析 · 数学 2007-05-23 Victor Shulman , Lyudmila Turowska

In this paper, applying some properties of variable exponent analysis, we first dwell on Adams and Spanne type estimates for a class of fractional type integral operators of variable orders, respectively and then, obtain variable exponent…

偏微分方程分析 · 数学 2018-11-19 Ferit Grbz , Shenghu Ding , Huili Han , Pinhong Long

In this paper, we provide a unifying theory concerning the convergence properties of the so-called max-product Kantorovich sampling operators based upon generalized kernels in the setting of Orlicz spaces. The approximation of functions…

泛函分析 · 数学 2025-02-25 Lorenzo Boccali , Danilo Costarelli , Gianluca Vinti

The continuous analogue of a Toeplitz determinant identity for Wiener-Hopf operators is proved. An example which arises from random matrix theory is studied and an error term for the asymptotics of the determinant is computed.

经典分析与常微分方程 · 数学 2007-05-23 Estelle Basor , Yang Chen

We prove a Tauberian theorem for the Voronoi summation method of divergent series with an estimate of the remainder term. The results on the Voronoi summability are then applied to analyze the mean values of multiplicative functions on…

组合数学 · 数学 2011-04-08 Vytas Zacharovas

Although regular expressions do not correspond univocally to regular languages, it is still worthwhile to study their properties and algorithms. For the average case analysis one often relies on the uniform random generation using a…

形式语言与自动机理论 · 计算机科学 2021-03-25 Sabine Broda , António Machiavelo , Nelma Moreira , Rogério Reis

In this note the Choquet type operators are introduced, in connection to Choquet's theory of integrability with respect to a not necessarily additive set function. Based on their properties, a quantitative estimate for the nonlinear…

经典分析与常微分方程 · 数学 2021-04-14 Sorin G. Gal , Constantin P. Niculescu

In this paper, we introduce a modification of the Szasz-Mirakjan-Kantorovich operators as well as Stancu operators [9] (or a Dunkl generalization of modified Szasz-Mirakjan-Kantrovich operators [5]) which preserve the linear functions.…

经典分析与常微分方程 · 数学 2016-04-06 M. Mursaleen , Md. Nasiruzzaman

In the present paper, we introduce the generalized form of $(p,q)$ Baskakov-Durrmeyer Operators with Stancu type parameters. We derived the local and global approximation properties of these operators and obtained the convergence rate and…

经典分析与常微分方程 · 数学 2016-02-24 Vishnu Narayan Mishra , Shikha Pandey

In this paper, we introduce a generalization of the Bleimann-Butzer-Hahn operators based on (p,q)-integers and obtain Korovkin's type approximation theorem for these operators. Furthermore, we compute convergence of these operators by using…

经典分析与常微分方程 · 数学 2015-11-25 M. Mursaleen , Md. Nasiruzzaman , Asif Khan , Khursheed J. Ansari

In this paper, we develop Windschitl's approximation formula for the gamma function to two asymptotic expansions by using a little known power series. In particular, for $n\in \mathbb{N}$ with $n\geq 4$, we have \begin{equation*} \Gamma…

经典分析与常微分方程 · 数学 2017-12-22 Zhen-Hang Yang , Jing-Feng Tian

A new Goodman-Sharma modification of the Baskakov operator is presented for approximation of bounded and continuous on $[0,\,\infty)$ functions. In our study on the approximation error of the proposed operator we prove direct and strong…

经典分析与常微分方程 · 数学 2024-12-09 Ivan Gadjev , Parvan Parvanov , Rumen Uluchev

The approximation of integral functionals with respect to a stationary Markov process by a Riemann-sum estimator is studied. Stationarity and the functional calculus of the infinitesimal generator of the process are used to get a better…

概率论 · 数学 2016-10-18 Randolf Altmeyer , Jakub Chorowski

We demonstrate criteria, purely based on finite subwords of the potential, to guarantee spectral inclusion as well as Hausdorff approximation of pseudospectra or even spectra of generalized Schr\"odinger operators on the discrete line or…

谱理论 · 数学 2023-01-20 Fabian Gabel , Dennis Gallaun , Julian Großmann , Marko Lindner , Riko Ukena

Approximation theory is a substantial field of mathematical analysis that emerged in the 19th century and has been developed by mathematicians across the globe ever since. Its importance has increased over time, as it provides solutions to…

综合数学 · 数学 2025-01-22 Reşat Aslan

Monotonicity of pairs of operators is an extension of monotonicity of operators, which plays an important role in solving non-monotone inclusions. One of challenging problems in this new tool is how to design the associated mappings to…

最优化与控制 · 数学 2026-01-21 Ba Khiet Le , Zakaria Mazgouri , Michel Théra

A new Goodman-Sharma type modification of the Meyer-K\"{o}nig and Zeller operator for approximation of bounded continuous functions on [0,1) is presented. We estimate the approximation error of the proposed operator and prove direct and…

经典分析与常微分方程 · 数学 2025-06-18 Ivan Gadjev , Parvan Parvanov , Rumen Uluchev

In this paper, we introduce the nonlinear exponential Kantorovich sampling series. We establish pointwise and uniform convergence properties and a nonlinear asymptotic formula of the Voronovskaja-type given in terms of the limsup.…

泛函分析 · 数学 2025-08-12 Danilo Costarelli , Mariarosaria Natale