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This article gives an introduction for mathematicians interested in numerical computations in algebraic geometry and number theory to some recent progress in algorithmic number theory, emphasising the key role of approximate computations…

数论 · 数学 2012-05-29 Jean-Marc Couveignes , Bas Edixhoven

In the present article, we propose the generalization of Sz\'{a}sz-Mirakyan operators, which is a class of linear positive operators of discrete type depending on a real parameters. We give theorem of degree of approximation, the…

经典分析与常微分方程 · 数学 2015-09-01 Prashantkumar Patel , Vishnu Narayan Mishra

The approximation properties of the Aldaz-Kounchev-Render (AKR) operators are discussed and classes of functions for which these operators approximate better than the classical Bernstein operators are described. The new results are then…

数值分析 · 数学 2022-04-25 Ana Acu , Stefano De Marchi , Ioan Rasa

The main purpose of this paper is to determine the approximations of Durrmeyer modification of Szasz-Mirakjan operators, defined by Mishra et al. (Boll. Unione Mat. Ital. (2016) 8(4):297-305). We estimate the order of approximation of the…

泛函分析 · 数学 2020-02-14 Rishikesh Yadav , Ramakanta Meher , Vishnu Narayan Mishra

This paper deals with the approximations of Durrmeyer type generalization of Szasz-Mirakjan operators. We establish the direct results, quantitative Voronovskaya type theorem, Gruss type theorem, A-statistical convergence, rate of…

泛函分析 · 数学 2019-12-02 Rishikesh Yadav , Ramakanta Meher , Vishnu Narayan Mishra

In the present article, we propose the new class positive linear operators, which discrete type depending on a real parameters. These operators are similar to Jain operators but its approximation properties are different then Jain…

经典分析与常微分方程 · 数学 2019-04-19 Prashantkumar Patel

In this paper, we are dealing with a new type of Baskakov-Schurer-Szasz operators (\ref{eq1}). Approximation properties of this operators are explored: the rate of convergence in terms of the usual moduli of smoothness is given, the…

泛函分析 · 数学 2015-08-24 Vishnu Narayan Mishra , Preeti Sharma

Many well-known positive linear operators (like Bernstein, Baskakov, Sz\'{a}sz-Mirakjan) are constructed by using specific fundamental functions. The sums of the squared fundamental functions have been objects of study in some recent…

经典分析与常微分方程 · 数学 2014-11-21 Ioan Rasa

Recently, two of the authors obtained estimates for the adjoint restriction operator to finite type curves with respect to general measures. Strikingly, it turns out that some of such estimates are sharp, especially when the measures are…

经典分析与常微分方程 · 数学 2019-11-04 Seheon Ham , Hyerim Ko , Sanghyuk Lee

In this paper we introduce the Stancu type generalization of the q-Bernstein-Schurer-Kantorovich operators and examine their approximation properties. We investigate the convergence of our operators with the help of the Korovkin's…

经典分析与常微分方程 · 数学 2016-02-23 M. Mursaleen , Taqseer Khan

We describe and study geometric properties of discrete circular and spherical means of directional derivatives of functions, as well as discrete approximations of higher order differential operators. For an arbitrary dimension we present a…

数值分析 · 数学 2015-05-28 Alexander Belyaev , Boris Khesin , Serge Tabachnikov

In this article, we achieve some general statistical approximation results for $ \lambda $-Bernstein operators in addition to some other approximation properties. We prove a statistical Voronovskaja-type approximation theorem. We also…

经典分析与常微分方程 · 数学 2019-02-25 Faruk Özger

his paper deals with approximating properties of the newly defined $q$-generalization of the Sz\'{a}sz operators in the case $q>1$. Quantitative estimates of the convergence in the polynomial weighted spaces and the Voronovskaja's theorem…

泛函分析 · 数学 2010-05-24 Nazim I. Mahmudov

We obtain approximation results for general positive linear operators satisfying mild conditions, when acting on discontinuous functions and absolutely continuous functions having discontinuous derivatives. The upper bounds, given in terms…

概率论 · 数学 2024-10-29 José A. Adell , P. Garrancho , F. J. Martínez-Sánchez

A new type of combinations of Bernstein operators is given in [1]. Here, we introduce another one, which can be used to approximate the functions with singularities. The direct and inverse results of the weighted approximation of this new…

泛函分析 · 数学 2011-06-28 Wen-ming Lu , Lin Zhang

Our main aim is to investigate the approximation properties for the summation integral type operators in a statistical sense. In this regard, we prove the statistical convergence theorem using well known Korovkin theorem and the degree of…

泛函分析 · 数学 2019-12-24 Rishikesh Yadav , Ramakanta Meher , Vishnu Narayan Mishra

In this article we present the Durrmeyer variant of generalized Bernstein operators that preserve the constant functions involving non-negative parameter ?. We derive the approximation behaviour of these operators including global…

经典分析与常微分方程 · 数学 2018-08-07 Arun Kajla , Meenu Goyal

We obtain a coarse relationship between geometric intersection numbers of curves and the sum of their subsurface projection distances with explicit quasi-constants. By using this relationship, we give applications in the studies of the…

几何拓扑 · 数学 2017-09-12 Yohsuke Watanabe

This article investigates the convergence properties of s-numbers of certain truncations of bounded linear operators between Banach spaces. We prove a generalized version of a known convergence result for the approximation numbers of…

泛函分析 · 数学 2024-12-18 Deepesh K P

The Chord algorithm is a popular, simple method for the succinct approximation of curves, which is widely used, under different names, in a variety of areas, such as, multiobjective and parametric optimization, computational geometry, and…

数据结构与算法 · 计算机科学 2013-09-30 Constantinos Daskalakis , Ilias Diakonikolas , Mihalis Yannakakis
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