Results 91 to 100 of about 4,284 (195)
Journal of Mathematics, Volume 2025, Issue 1, 2025.In this paper, we investigate multiplicity, existence, and nonexistence of periodic solutions to a fourth‐order partial difference equation via linking theorem and saddle point theorem. Our obtained results significantly generalize and improve some existing ones.
Dan Li, Yuhua Long, Ji Gao
wiley +1 more source
ULTRA-SHARP nonoscillatory convection schemes for high-speed steady multidimensional flow [PDF]
For convection-dominated flows, classical second-order methods are notoriously oscillatory and often unstable. For this reason, many computational fluid dynamicists have adopted various forms of (inherently stable) first-order upwinding over the past few
Leonard, B. P., Mokhtari, Simin
core +1 more source
Asymptotic properties of nonoscillatory solutions of higher order neutral difference equations [PDF]
Opuscula Mathematica, 2006 In this paper we study asymptotic behavior of solutions of a higher order neutral difference equation of the form \[\Delta^m(x_n+p_nx_{n-\tau})+f(n,x_{\sigma (n)})=h_n.\] We present conditions under which all nonoscillatory solutions of the above ...
Małgorzata Migda
doaj
Essentially nonoscillatory postprocessing filtering methods [PDF]
High order accurate centered flux approximations used in the computation of numerical solutions to nonlinear partial differential equations produce large oscillations in regions of sharp transitions.
Lafon, F., Osher, S.
core +1 more source
Multiple Scattering Theory for Two-dimensional Electron Gases in the Presence of Spin-Orbit Coupling
, 2005 In order to model the phase-coherent scattering of electrons in two-dimensional electron gases in the presence of Rashba spin-orbit coupling, a general partial-wave expansion is developed for scattering from a cylindrically symmetric potential.
Eric J. Heller +5 more
core +1 more source
An LU implicity scheme for high speed inlet analysis [PDF]
A numerical method is developed to analyze the inviscid flowfield of a high speed inlet by the solution of the Euler equations. The lower-upper implicit scheme in conjunction with adaptive dissipation proves to be an efficient and robust nonoscillatory ...
Jameson, A., Yoon, S.
core +1 more source
NONOSCILLATORY SOLUTIONS FOR NONLINEAR DISCRETE SYSTEMS
, 2002 We investigate some asymptotic properties of a nonlinear forced difference system In particular we give necessary and sufficient conditions for existence of the so-called regularly decaying solutions and thereby we complete the results presented in ["New Progress in Difference Equations'', 2004 , pp.493-500, CRC Press, Boca Raton].
MARINI, MAURO, MATUCCI, SERENA, P. REHAK
openaire +1 more source
Oscillatory and nonoscillatory solutions of multivalued differential inclusions
Computers & Mathematics with Applications, 2005 The paper concerns the existence of Carathéodory solutions to the ``scalar'' differential inclusion \(y'(t)\in F(t,y(t))\) subject to the constraints \(\alpha(t)\leq y(t)\leq\beta(t)\) (if \(\alpha\) and \(\beta\) are oscillatory functions, then so is \(y\)). The hypotheses must be added that \(\alpha\) and \(\beta\) are absolutely continuous (for the `
Benchohra, M., Graef, J.R., Ouahab, A.
openaire +1 more source
Non-oscillatory spectral Fourier methods for shock wave calculations [PDF]
A non-oscillatory spectral Fourier method is presented for the solution of hyperbolic partial differential equations. The method is based on adding a nonsmooth function to the trigonometric polynomials which are the usual basis functions for the Fourier ...
Cai, Wei, Gottlieb, David, Shu, Chi-Wang
core +1 more source
Coupling-induced oscillations in two intrinsically quiescent populations
, 2015 A model of two consumer-resource systems linked by interspecific interference competition of consumers is considered. The basic assumption of the model is that the dynamics of the resource is much slower than that of the consumer.
Mustafin, A.
core +1 more source