Results 11 to 20 of about 430 (232)

Monotonicity of Quadrature Approximations [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
For the general quadrature rules of Newton-Cotes we show that the convergence is monotone for the appropriate class of functions. Included are the well-known trapezoidal and Simpson rules.
openaire   +1 more source

Polynomial approximation and quadrature on geographic rectangles [PDF]

open access: yesApplied Mathematics and Computation, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
M. Gentile   +2 more
openaire   +2 more sources

Sampling-based Nyström Approximation and Kernel Quadrature

open access: yesCoRR, 2023
22 pages, ICML 2023 camera-ready version.
Hayakawa, S, Oberhauser, H, Lyons, T
openaire   +5 more sources

Optimal Quadrature-Sparsification for Integral Operator Approximation [PDF]

open access: yesSIAM Journal on Scientific Computing, 2018
The design of sparse quadratures for the approximation of integral operators related to symmetric positive-semidefinite kernels is addressed. Particular emphasis is placed on the approximation of the main eigenpairs of an initial operator and on the assessment of the approximation accuracy.
Gauthier, Bertrand   +3 more
openaire   +2 more sources

Quadrature and Harmonic L 1 -Approximation in Annuli [PDF]

open access: yesTransactions of the American Mathematical Society, 1989
Open sets D D in
D. H. Armitage, M. Goldstein
openaire   +1 more source

Approximate quadratures of the circle [PDF]

open access: yesJournal of the Franklin Institute, 1879
n ...
openaire   +1 more source

Iterative methods for solving Ambartsumian’s equations. Part 1

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2021
Background. Ambartsumian’s equation and its generalizations are one of the main integral equations of astrophysics, which have found wide application in many areas of physics and technology. An analytical solution to this equation is currently unknown,
I.V. Boykov, A.A. Shaldaeva
doaj   +1 more source

Talbot quadratures and rational approximations [PDF]

open access: yesBIT Numerical Mathematics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Trefethen, L. N.   +2 more
openaire   +2 more sources

On approximate solution of non-elliptic singular integral equation systems in Lebesgue spaces [PDF]

open access: yesComputer Science Journal of Moldova, 2000
We investigate in this paper problems of theoretical foundation of collocations and mechanical quadratures methods for approximate solution of singular integral equation systems in the case, when their symbols have on the integration contour a finite set
T. Cibotaru
doaj  

Effect of Correlated Non-Gaussian Quadratures on the Performance of Binary Modulations

open access: yesJournal of Electrical and Computer Engineering, 2011
The received signal in many wireless communication systems comprises of the sum of waves with random amplitudes and random phases. In general, the composite signal consists of correlated nonidentical Gaussian quadrature components due to the central ...
Valentine A. Aalo, George P. Efthymoglou
doaj   +1 more source

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