Results 11 to 20 of about 10,993,960 (288)

A two - grid, fourth order method for nonlinear fourth order boundary value problems [PDF]

open access: yes, 1985
A fourth order convergent finite difference method is developed for the numerical solution of the nonlinear fourth order boundary value problem y(iv)(x) = f(x,y ...
Twizell, E H
core   +7 more sources

A family of difference schemes for fourth order parabolic partial differential equations [PDF]

open access: yes, 1983
A family of methods is developed for the numerical solution of fourth order parabolic partial differential equations in one- and two-space variables.
Khaliq, AQM, Twizell, EH
core   +7 more sources

Fourth-order symplectic integration [PDF]

open access: yesPhysica D: Nonlinear Phenomena, 1990
Die Autoren behandeln die Integration der Hamiltonschen Gleichungen unter Anwendung einer expliziten Vierter-Ordnung-Methode. Diese bewahrt die Eigenschaft, daß eine zeitliche Entwicklung eines solchen Systems eine kanonische Transformation aus den Anfangsbedingungen bis zum Endzustand erhält.
Forest, E., Ruth, R.D.
openaire   +2 more sources

Rearrangements and fourth order equations [PDF]

open access: yesQuarterly of Applied Mathematics, 2003
The paper contains a priori estimates for the deformation of plates and beams. In particular we investigate the “worst cases” for the maximum deformation depending on where a load is placed on a beam or plate. The methods of proof use rearrangement argument.
FERONE, VINCENZO, KAWOHL B.
openaire   +4 more sources

Higher-order finite-difference methods for partial differential equations [PDF]

open access: yes, 1997
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis develops two families of numerical methods, based upon rational approximations having distinct real poles, for solving first- and second-order ...
Cheema, Tasleem Akhter
core   +7 more sources

Fourth-order operators on manifolds with a boundary [PDF]

open access: yesClassical and Quantum Gravity, 1999
25 pages, plain Tex.
ESPOSITO G, KAMENSHCHIK A.YU
openaire   +4 more sources

Stability analysis of second- and fourth-order finite-difference modelling of wave propagation in orthotropic media [PDF]

open access: yes, 2010
The stability of the finite-difference approximation of elastic wave propagation in orthotropic homogeneous media in the three-dimensional case is discussed.
Veres, Istvan
core   +4 more sources

Positive solutions of nonlinear fourth-order boundary-value problems with local and non-local boundary conditions [PDF]

open access: yes, 2008
We establish new existence results for multiple positive solutions of fourth-order nonlinear equations which model deflections of an elastic beam. We consider the widely studied boundary conditions corresponding to clamped and hinged ends and many non ...
J. R. L. Webb   +5 more
core   +1 more source

More Effective Results for Testing Oscillation of Non-Canonical Neutral Delay Differential Equations

open access: yesMathematics, 2021
In this work, we address an interesting problem in studying the oscillatory behavior of solutions of fourth-order neutral delay differential equations with a non-canonical operator.
Higinio Ramos   +3 more
doaj   +1 more source

A fourth-order compact solver for fractional-in-time fourth-order diffusion equations

open access: yesCoRR, 2019
A fourth-order compact scheme is proposed for a fourth-order subdiffusion equation with the first Dirichlet boundary conditions. The fourth-order problem is firstly reduced into a couple of spatially second-order system and we use an averaged operator to construct a fourth-order spatial approximation. This averaged operator is compact since it involves
Jialing Zhong   +3 more
openaire   +2 more sources

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