Results 21 to 30 of about 4,846 (246)

Using Neural Networks for Fast Numerical Integration and Optimization

open access: yesIEEE Access, 2020
We present a novel numerical integration technique, Neural Network Integration, or NNI, where shallow neural network design is used to approximate an integrand function within a bounded set. This function approximation is such that a closed-form solution
Steffan Lloyd   +2 more
doaj   +1 more source

Integrals with two-variable generating function in the integrand

open access: yesMontes Taurus journal of pure and applied mathematics, 2021
The main motive of this study is to present a new class of generalized integral formulae which involve a generating function of two variables G(u, x). By this approach we deduce a set of new outcomes, which are integrals associated with generalized hypergeometric function, Laguerre, Hermite and Bessel polynomials, Kampe de Feriet hypergeometric series ...
Ali, Musharraf   +2 more
openaire   +2 more sources

Rearrangement inequalities for functionals with monotone integrands

open access: yesJournal of Functional Analysis, 2006
20 pages.
Burchard, Almut, Hajaiej, Hichem
openaire   +3 more sources

A fast algorithm for computing the Boys function

open access: yes, 2021
We present a new fast algorithm for computing the Boys function using a nonlinear approximation of the integrand via exponentials. The resulting algorithms evaluate the Boys function with real and complex valued arguments and are competitive with ...
Beylkin, Gregory, Sharma, Sandeep
core   +1 more source

Regularity for nonlinear elliptic equations and systems

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2020
We study the regularity of weak solutions to the elliptic system in divergence form divA(x, Du)=0 in an open set Ω of R^n, n≥2. The vector field A(x.ξ), A: Ω×R^(m×n)→R^(m×n), has a variational nature in the sense that A(x,ξ)= Dξ f(x,ξ), where f:Ω×R^(m×n)→
Paolo Marcellini
doaj   +1 more source

Quadrature error functional expansions for the simplex when the integrand function has singularities at vertices

open access: yes, 1980
In a previous paper by Lyness, an asymptotic expansion for the quadrature error functional for the n-dimensional simplex, valid when the integrand is an analytic function, was given. In this paper we develop the analogue of this result to cover the cases
G. Monegato, J. N. Lyness
core   +1 more source

Epi-Convergence of Expectation Functions under Varying Measures and Integrands

open access: yes, 2022
For expectation functions on metric spaces, we provide sufficient conditions for epi-convergence under varying probability measures and integrands, and examine applications in the area of sieve estimators, mollifier smoothing, PDE-constrained optimization, and stochastic optimization with expectation constraints.
Feinberg, Eugene A.   +2 more
openaire   +3 more sources

On Some New Integrals Relation of ഥ -function [PDF]

open access: yes, 2020
In this paper we derive some new integrals whose integrand contains product of Horn's function and ‫ܪ‬ ഥ -function of one ...
Shukla Manoj Kumar   +3 more
core  

On the best possible description of an exceptional set in asymptotic estimates for Laplace–Stieltjes integrals [PDF]

open access: yesМатематичні Студії, 2011
For the Laplace–Stieltjes integrals new description of the exceptional set in asymptotic upper estimates in terms of the maximum of the integrand function is obtained.
O. B. Skaskiv, D. Yu. Zikrach
doaj  

A relaxation result in BV for integral functionals with discontinuous integrands [PDF]

open access: yesESAIM: Control, Optimisation and Calculus of Variations, 2007
Summary: We prove a relaxation theorem in BV for a non coercive functional with linear growth. No continuity of the integrand with respect to the spatial variable is assumed.
AMAR, Micol   +2 more
openaire   +4 more sources

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