Results 21 to 30 of about 37,248 (196)

Error Bounds for Optimal Definite Quadrature Formulae

open access: yesJournal of Approximation Theory, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kohler, P., Nikolov, G.
openaire   +1 more source

Random search algorithm for solving the nonlinear Fredholm integral equations of the second kind. [PDF]

open access: yesPLoS ONE, 2014
In this paper, a randomized numerical approach is used to obtain approximate solutions for a class of nonlinear Fredholm integral equations of the second kind.
Zhimin Hong, Zaizai Yan, Jiao Yan
doaj   +1 more source

Discretizing Distributions with Exact Moments: Error Estimate and Convergence Analysis

open access: yes, 2015
The maximum entropy principle is a powerful tool for solving underdetermined inverse problems. This paper considers the problem of discretizing a continuous distribution, which arises in various applied fields. We obtain the approximating distribution by
Tanaka, Ken'ichiro, Toda, Alexis Akira
core   +1 more source

A Multilevel Heterogeneous ADMM Algorithm for Elliptic Optimal Control Problems with L1-Control Cost

open access: yesMathematics, 2023
In this paper, elliptic optimal control problems with L1-control cost and box constraints on the control are considered. To numerically solve the optimal control problems, we use the First optimize, then discretize approach.
Xiaotong Chen   +3 more
doaj   +1 more source

On an Optimal Quadrature Formula for Classes of Functions Given by Modulus of Continuity

open access: yesМоделирование и анализ информационных систем, 2014
The problem of minimizing the error of a cubature formula on the classes of functions given by modulus of continuity for cubature formulas with fixed nodes on the boundary of gird rectangular localization domain of nodes is considered.
M. Sh. Shabozov
doaj   +1 more source

Elementary test for non-classicality based on measurements of position and momentum

open access: yes, 2015
We generalise a non-classicality test described by Kot et al. [Phys. Rev. Lett. 108, 233601 (2010)], which can be used to rule out any classical description of a physical system.
Borregaard, Johannes   +2 more
core   +1 more source

Uniqueness of the Optimal Nodes of Quadrature Formulae [PDF]

open access: yesMathematics of Computation, 1981
We prove the uniqueness of the quadrature formula with minimal error in the space W ~ q r [ a , b ] , 1 > q > ∞ \tilde W_q^r[a,b],1 > q > \infty , of
openaire   +2 more sources

Construction of Supplemental Functions for Direct Serendipity and Mixed Finite Elements on Polygons

open access: yesMathematics, 2023
New families of direct serendipity and direct mixed finite elements on general planar, strictly convex polygons were recently defined by the authors. The finite elements of index r are H1 and H(div) conforming, respectively, and approximate optimally to ...
Todd Arbogast, Chuning Wang
doaj   +1 more source

On optimal quadrature formulae

open access: yesJournal of Inequalities and Applications, 2000
For integrals involving a nonnegative weight function on a finite interval the author proposes a procedure to construct quadrature formulas which are exact for solutions of linear differential equations and are optimal in the sense of Sard. The author establishes necessary and sufficient conditions for the existence of such formulas.
openaire   +3 more sources

Weighted Optimal Quadrature Formulas in Sobolev Space and Their Applications

open access: yesAlgorithms
The optimization of computational algorithms is one of the main problems of computational mathematics. This optimization is well demonstrated by the example of the theory of quadrature and cubature formulas.
Kholmat Shadimetov, Khojiakbar Usmanov
doaj   +1 more source

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