Results 11 to 20 of about 10,905,906 (292)

The fourth order strongly noncanonical operators

open access: yesOpen Mathematics, 2018
It is shown that the strongly noncanonical fourth order ...
Baculikova Blanka, Dzurina Jozef
doaj   +2 more sources

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   +6 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   +6 more sources

New Criteria for Oscillation of Half-Linear Differential Equations with p-Laplacian-like Operators

open access: yesMathematics, 2021
In this paper, new oscillatory properties for fourth-order delay differential equations with p-Laplacian-like operators are established, using the Riccati transformation and comparison method.
Omar Bazighifan   +4 more
doaj   +1 more source

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

Bouncing Cosmology in Fourth-Order Gravity

open access: yesUniverse, 2022
The Big Bang initial singularity problem can be solved by means of bouncing solutions. In the context of extended theories of gravity, we will look for covariant effective actions whose field equations contain up to fourth-order derivatives of the metric
Marcello Miranda   +3 more
doaj   +1 more source

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

Oscillation of Neutral Differential Equations with Damping Terms

open access: yesMathematics, 2023
Our interest in this paper is to study and develop oscillation conditions for solutions of a class of neutral differential equations with damping terms. New oscillation criteria were obtained by using Riccati transforms. The criteria we obtained improved
Ioannis Dassios   +3 more
doaj   +1 more source

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

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