On approximation properties of a new construction of Baskakov operators
Advances in Difference Equations, 2021 The purpose of this research is to construct sequences of Baskakov operators such that their construction consists of a function σ by use of two function sequences, ξ n $\xi _{n} $ and η n $\eta _{n} $ .
Fuat Usta
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Approximation hardness of dominating set problems in bounded degree graphs [PDF]
, 2008 We study approximation hardness of the Minimum Dominating Set problem and its variants in undirected and directed graphs. Using a similar result obtained by Trevisan for Minimum Set Cover we prove the first explicit approximation lower bounds for various
Chlebikova, Janka +4 more
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LDPC Coded Multi-User Massive MIMO Systems With Low-Complexity Detection
IEEE Access, 2022 We design a low-density parity-check (LDPC) coded multi-user (MU) massive multiple-input multiple-output (MIMO) system with an iterative joint detection and decoding (JDD) algorithm.
Han Jin Park, Jeong Woo Lee
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Convergence and rate optimality of adaptive multilevel stochastic Galerkin FEM [PDF]
, 2022 We analyze an adaptive algorithm for the numerical solution of parametric elliptic partial differential equations in two-dimensional physical domains, with coefficients and right-hand-side functions depending on infinitely many (stochastic) parameters ...
Bespalov, Alex +2 more
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On the convergence of the implicit iterative line-by-line recurrence method for solving difference elliptical equations [PDF]
Компьютерные исследования и моделирование, 2017 In the article a theory of the implicit iterative line-by-line recurrence method for solving the systems of finite-difference equations which arise as a result of approximation of the two-dimensional elliptic differential equations on a regular grid is ...
Alexander Arkad'evich Fomin +1 more
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The Finite Element Method of High Degree of Accuracy for Boundary Value Problem with Singularity
Mathematics, 2023 Mathematical models of fracture physics and mechanics are boundary value problems for differential equations and systems of equations with a singularity.
Viktor A. Rukavishnikov +1 more
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Orthogonal series approximation for boundary layers [PDF]
Theoretical and Applied Mechanics, 2004 In this paper we shall consider a class of singularly perturbed problems described by the ordinary differential equation of second order with small parameter multiplying the highest derivative and the appropriate boundary conditions, which describes ...
Adžić Nevenka, Ovcin Z.
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Approximation methods for hybrid diffusion systems with state-dependent switching processes : numerical algorithms and existence and uniqueness of solutions [PDF]
, 2010 By focusing on hybrid diffusions in which continuous dynamics and discrete events coexist, this work is concerned with approximation of solutions for hybrid stochastic differential equations with a state-dependent switching process.
Yuan, Chenggui +3 more
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The approximation of bivariate Chlodowsky-Szász-Kantorovich-Charlier-type operators
Journal of Inequalities and Applications, 2017 In this paper, we introduce a bivariate Kantorovich variant of combination of Szász and Chlodowsky operators based on Charlier polynomials. Then, we study local approximation properties for these operators.
Purshottam Narain Agrawal +2 more
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Improved approximation algorithms for degree-bounded network design problems with node connectivity requirements [PDF]
, 2014 We consider degree bounded network design problems with element and vertex connectivity requirements. In the degree bounded Survivable Network Design (SNDP) problem, the input is an undirected graph G = (V, E) with weights w(e) on the edges and degree ...
Ali Vakilian +3 more
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