Results 61 to 70 of about 143 (130)

Discretization And Weak Invariants

open access: yes, 1994
. We consider the preservation of weak solution invariants in the time integration of ordinary differential equations (ODEs). Recent research has concentrated on obtaining symplectic discretizations of Hamiltonian systems and schemes that preserve ...
B. Leimkuhler
core  

Convergence of Runge-Kutta methods for delay differential equations

open access: yes, 1999
This paper deals with the adaptation of Runge--Kutta methods to the numerical solution of (nonstiff) initial value problems for delay differential equations.
K.J. in 't Hout   +2 more
core  

Analytical and qualitative investigation of COVID-19 mathematical model under fractional differential operator. [PDF]

open access: yesMath Methods Appl Sci, 2021
Shah K   +5 more
europepmc   +1 more source

Exploiting structure in the construction of DIMSIMs

open access: yes, 1997
. We describe the structure of the nonlinear system for the coefficients of diagonally implicit multistage integration methods for ordinary differential equations.
H. D. Mittelmann, Z. Jackiewicz
core  

A Parallel Stiff ODE Solver based on MIRKs

open access: yes, 1996
A parallel, "across the method" implementation of a stiff ODE solver is presented. The construction of the methods is outlined and the main implementational issues are discussed.
Claus Bendtsen
core  

Application of Sparse Matrix Techniques in the Chemical Part of a Large Air Pollution Model

open access: yes, 2007
Large-scale air pollution models are represented by large systems of partial differential equations. After some discretization and splitting procedures these are transformed into several huge systems of ODE's, which are to be handled numerically ...
Z. Zlatev, Tz Ostromsky, Zahari Zlatev
core  

Symplectic Runge-Kutta Schemes III: Canonical Elementary Differentials

open access: yes, 1993
. It has been shown that numerical methods for Hamiltonian systems may be characterised in terms of so-called canonical elementary differentials. Recent results by the authors demonstrate that the symplecticity condition for Runge-Kutta schemes may be ...
M. Sofroniou, W. Oevel
core  

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