Results 21 to 30 of about 387,114 (225)

Automorphisms of Ordinary Differential Equations

open access: yesAbstract and Applied Analysis, 2014
The paper deals with the local theory of internal symmetries of underdetermined systems of ordinary differential equations in full generality. The symmetries need not preserve the choice of the independent variable, the hierarchy of dependent variables ...
Václav Tryhuk, Veronika Chrastinová
doaj   +1 more source

A method for constructing a complete bifurcation picture of a boundary value problem for nonlinear partial differential equations: application of the Kolmogorov-Arnold theorem [PDF]

open access: yesИзвестия высших учебных заведений: Прикладная нелинейная динамика
The purpose of this study is to develop a numerical method for bifurcation analysis of nonlinear partial differential equations, based on the reduction of partial differential equations to ordinary ones, using the Kolmogorov-Arnold theorem.
Gromov, Vasily Alexandrovich   +4 more
doaj   +1 more source

The remarkable effectiveness of time-dependent damping terms for second order evolution equations [PDF]

open access: yes, 2015
We consider a second order linear evolution equation with a dissipative term multiplied by a time-dependent coefficient. Our aim is to design the coefficient in such a way that all solutions decay in time as fast as possible.
Ghisi, Marina   +2 more
core   +4 more sources

SOLUSI DARI PERSAMAAN CAUCHY–EULER NONHOMOGEN KASUS LOGARITMIK

open access: yesE-Jurnal Matematika, 2020
Ordinary differential equation is one form of differential equations that are often found in everyday life. One form of ordinary differential equations which has non–constant coefficients is the Cauchy–Euler differential equation.
I GEDE PUTU MIKI SUKADANA   +2 more
doaj   +1 more source

Lipschitz stability for generalized ordinary differential equations and impulsive retarded differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2019
We consider a class of retarded functional differential equations with preassigned moments of impulsive effect and we study the Lipschitz stability of solutions of these equations using the theory of generalized ordinary differential equations and ...
Suzete Afonso, Márcia da Silva
doaj   +1 more source

On the solutions of fractional random ordinary differential equations with the Residual power series method

open access: yesAlexandria Engineering Journal, 2023
In this study, random ordinary differential equations obtained by randomly choosing the coefficients or initial conditions of the ordinary differential equations will be analyzed by the Residual Power Series Method. The initial conditions or coefficients
Mehmet Merdan, Nihal Atasoy
doaj   +1 more source

Fault Diagnosis via Neural Ordinary Differential Equations

open access: yesApplied Sciences, 2021
Implementation of model-based fault diagnosis systems can be a difficult task due to the complex dynamics of most systems, an appealing alternative to avoiding modeling is to use machine learning-based techniques for which the implementation is more ...
Luis Enciso-Salas   +2 more
doaj   +1 more source

Model of the telegraph line and its numerical solution [PDF]

open access: yes, 2018
This paper deals with a model of the telegraph line that consists of system of ordinary differential equations, rather than partial differential telegraph equation. Numerical solution is then based on an original mathematical method. This method uses the
Nečasová, Gabriela   +2 more
core   +1 more source

Ordinary differential equations described by their Lie symmetry algebra [PDF]

open access: yes, 2014
The theory of Lie remarkable equations, i.e. differential equations characterized by their Lie point symmetries, is reviewed and applied to ordinary differential equations.
Manno, Gianni   +3 more
core   +2 more sources

Pursuit Curves and Ordinary Differential Equations

open access: yesCommunications, 2012
This paper deals with the differential equations which describe curves of pursuit, in which the pursuer's velocity vector always points directly towards the pursued. We use the Laplace Transform method to solve the classic problem of four mice pursuit.
Zuzana Malacka
doaj   +1 more source

Home - About - Disclaimer - Privacy