Results 41 to 50 of about 1,519,058 (188)

Numerical solutions of differential equations [PDF]

open access: yes, 1969
Various numerical methods for solving differential equations were analyzed and refined in an effort to develop a method which was adaptable to a large class of problems.
Wesson, J. R.
core   +1 more source

Numerical Solutions of ODEs using Volterra Series [PDF]

open access: yes, 2006
We propose a numerical approach for solving systems of nonautonomous ordinary di®erential equations under suitable assumptions. This approach is based on expansion of the solutions by Volterra series and allows to estimate the accuracy of the ...
Kirov, Nikolay, Krastanov, Michail
core  

Coordinate Singularities in Harmonically-sliced Cosmologies [PDF]

open access: yes, 2000
Harmonic slicing has in recent years become a standard way of prescribing the lapse function in numerical simulations of general relativity. However, as was first noticed by Alcubierre (1997), numerical solutions generated using this slicing condition ...
A. Geyer   +13 more
core   +2 more sources

Analytical and numerical solutions to describe water table fluctuations due to canal seepage and time-varying recharge

open access: yesJournal of Hydroinformatics, 2022
Hybrid finite analytic solution (HFAS), Galerkin's method based finite element solution (FES) and fully implicit finite difference solution (FIFDS) of one dimensional nonlinear Boussinesq equation and Analytical solution of Boussinesq equation linearized
Ashutosh Upadhyaya, Manisha M. Kankarej
doaj   +1 more source

Structural stability of finite dispersion-relation preserving schemes

open access: yes, 2008
The goal of this work is to determine classes of travelling solitary wave solutions for a differential approximation of a finite difference scheme by means of a hyperbolic ansatz.
Ablowitz   +16 more
core   +1 more source

Moving mesh finite difference solution of non-equilibrium radiation diffusion equations [PDF]

open access: yes, 2018
A moving mesh finite difference method based on the moving mesh partial differential equation is proposed for the numerical solution of the 2T model for multi-material, non-equilibrium radiation diffusion equations. The model involves nonlinear diffusion
Huang, Weizhang   +2 more
core   +2 more sources

Constructing exact symmetric informationally complete measurements from numerical solutions

open access: yes, 2018
Recently, several intriguing conjectures have been proposed connecting symmetric informationally complete quantum measurements (SIC POVMs, or SICs) and algebraic number theory. These conjectures relate the SICs and their minimal defining algebraic number
Appleby, Marcus   +3 more
core   +1 more source

An integrable semi-discretization of the Camassa-Holm equation and its determinant solution

open access: yes, 2008
An integrable semi-discretization of the Camassa-Holm equation is presented. The keys of its construction are bilinear forms and determinant structure of solutions of the CH equation.
Ablowitz M J   +12 more
core   +1 more source

Depth-Extrapolation-Based True-Amplitude Full-Wave-Equation Migration from Topography

open access: yesApplied Sciences, 2021
The lack of an initial condition is one of the major challenges in full-wave-equation depth extrapolation. This initial condition is the vertical partial derivative of the surface wavefield and cannot be provided by the conventional seismic acquisition ...
Hao Liu, Xuewei Liu
doaj   +1 more source

Numerical solutions for lunar orbits [PDF]

open access: yes, 1997
Starting from a variational formulation based on Hamilton’s Principle, the paper exploits the finite element technique in the time domain in order to solve orbital dynamic problems characterised by constrained boundary value rather than initial value ...
Finzi, Amalia E., Vasile, Massimiliano
core  

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