Results 21 to 30 of about 8,991,569 (289)

Rapid evaluation of radial basis functions [PDF]

open access: yes, 2005
Over the past decade, the radial basis function method has been shown to produce high quality solutions to the multivariate scattered data interpolation problem.
Baxter, Brad J.C.   +3 more
core   +1 more source

Structure of Positive Radial Solutions of Semilinear Elliptic Equations

open access: yesJournal of Differential Equations, 1997
This article primarily concerns uniqueness and asymptotic behavior of positive radial solutions to the semilinear problems (1) \(-\Delta u=f(u)\) in \(\mathbb{R}^n\), \(u(\infty)=0\); and (2) \(-\Delta u=f(u)\) in \(B\), \(u|_{\partial B}=0\), where \(B\) denotes a ball in \(\mathbb{R}^n\) centred at the origin, and \(f(t)= \min\{t^p,t^q\}\) for ...
Erbe, Lynn, Tang, Moxun
openaire   +1 more source

Three positive radial solutions for elliptic equations in a ball

open access: yesApplied Mathematics Letters, 2005
The authors consider the second-order elliptic problem of the form \[ -\Delta u=\lambda\cdot k(|x|) f(u),\quad u> 0\quad\text{in }\Omega,\quad u= a\quad\text{on }\partial\Omega,\tag{1} \] where \(\Omega\) is the ball of radius \(R_0\); \(\lambda\), \(a\) are positive parameters; \(f\in C([0,+\infty), [0,+\infty))\) is a increasing function and \(k\in C(
João Marcos do Ó   +2 more
openaire   +4 more sources

Boundary element formulations for the numerical solution of two-dimensional diffusion problems with variable coefficients [PDF]

open access: yes, 2012
This is the post-print version of the final paper published in Computers & Mathematics with Applications. The published article is available from the link below.
Škerget, L   +3 more
core   +1 more source

Existence of Positive Ground State Solutions for Choquard Systems

open access: yesAdvanced Nonlinear Studies, 2020
We study the existence of positive ground state solution for Choquard systems. In the autonomous case, we prove the existence of at least one positive ground state solution by the Pohozaev manifold method and symmetric-decreasing rearrangement arguments.
Deng Yinbin, Jin Qingfei, Shuai Wei
doaj   +1 more source

Existence of radial solutions for a p ( x ) $p(x)$ -Laplacian Dirichlet problem

open access: yesAdvances in Difference Equations, 2021
In this paper, using variational methods, we prove the existence of at least one positive radial solution for the generalized p ( x ) $p(x)$ -Laplacian problem − Δ p ( x ) u + R ( x ) u p ( x ) − 2 u = a ( x ) | u | q ( x ) − 2 u − b ( x ) | u | r ( x ) −
Maria Alessandra Ragusa   +2 more
doaj   +1 more source

Numerical solution of the two-dimensional Helmholtz equation with variable coefficients by the radial integration boundary integral and integro-differential equation methods [PDF]

open access: yes, 2012
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2012 Taylor & Francis.This paper presents new formulations of the boundary–domain integral equation (BDIE) and the boundary–domain integro-
Al-Jawary, MA, Wrobel, LC
core   +1 more source

A dynamic convergence control scheme for the solution of the radial equilibrium equation in through-flow analyses [PDF]

open access: yes, 2010
One of the most frequently encountered numerical problems in scientific analyses is the solution of non-linear equations. Often the analysis of complex phenomena falls beyond the range of applicability of the numerical methods available in the public ...
Templalexis, I.   +7 more
core   +1 more source

Radial positive solutions for p-Laplacian supercritical Neumann problems

open access: yesBruno Pini Mathematical Analysis Seminar, 2017
18 pages, 7 figures, "Seminari di Analisi Matematica Bruno Pini" - Universit\`a di ...
Francesca Colasuonno, Benedetta Noris
openaire   +7 more sources

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