Results 11 to 20 of about 297,552 (266)

Transforming Radical Differential Equations to Algebraic Differential Equations

open access: yesMediterranean Journal of Mathematics, 2022
Abstract In this paper we present an algorithmic procedure that transforms, if possible, a given system of ordinary or partial differential equations with radical dependencies in the unknown function and its derivatives into a system with polynomial relations among them by means of a rational change of variables.
Falkensteiner, Sebastian   +1 more
openaire   +3 more sources

Distributed Delay Differential Equation Representations of Cyclic Differential Equations [PDF]

open access: yesSIAM Journal on Applied Mathematics, 2021
Compartmental ordinary differential equation (ODE) models are used extensively in mathematical biology. When transit between compartments occurs at a constant rate, the well-known linear chain trick can be used to show that the ODE model is equivalent to an Erlang distributed delay differential equation (DDE).
openaire   +4 more sources

IMPLEMENTASI DELAY DIFFERENTIAL EQUATION PADA SOLVER ORDINARY DIFFERENTIAL EQUATION MATLAB

open access: yesJUTI: Jurnal Ilmiah Teknologi Informasi, 2002
Ordinary Differential Equation (ODE) dan Delay Differential Equation (DDE) banyak digunakan untuk menerangkan kejadian-kejadian pada dunia nyata. ODE melibatkan derivatif yang dipengaruhi oleh penyelesaian waktu sekarang dari variabel-variabel yang tidak
Rully Soelaiman, Yudhi Purwananto
doaj   +1 more source

DIFFERENTIAL GEOMETRY FROM DIFFERENTIAL EQUATIONS [PDF]

open access: yesThe Ninth Marcel Grossmann Meeting, 2001
37 pages, revised version with ...
Frittelli, Simonetta   +2 more
openaire   +2 more sources

On classical symmetries of ordinary differential equations related to stationary integrable partial differential equations [PDF]

open access: yesOpuscula Mathematica, 2021
We study the relationship between the solutions of stationary integrable partial and ordinary differential equations and coefficients of the second-order ordinary differential equations invariant with respect to one-parameter Lie group.
Ivan Tsyfra
doaj   +1 more source

Study on variable coefficients singular differential equation via constant coefficients differential equation

open access: yesBoundary Value Problems, 2019
In this paper, we consider the following third-order singular differential equation with variable coefficients: x‴+a(t)x=f(t,x)+e(t). $$ x'''+a(t)x=f(t,x)+e(t).
Shaowen Yao, Jie Liu
doaj   +1 more source

Periodic orbits near equilibria via averaging theory of second order

open access: yesMathematical Modelling and Analysis, 2012
Lyapunov, Weinstein and Moser obtained remarkable theorems giving sufficient conditions for the existence of periodic orbits emanating from an equilibrium point of a differential system with a first integral.
Luis Barreira   +2 more
doaj   +1 more source

Linearisation of a second-order nonlinear ordinary differential equation

open access: yesActa Polytechnica, 2023
We analyse nonlinear second-order differential equations in terms of algebraic properties by reducing a nonlinear partial differential equation to a nonlinear second-order ordinary differential equation via the point symmetry f(v)∂v.
Adhir Maharaj   +3 more
doaj   +1 more source

DIFFERENTIAL EQUATIONS ON GRAPHS [PDF]

open access: yesMathematics of the USSR-Sbornik, 1972
Summary: The differential equations encountered in various applications may be treated as equations on graphs. In the paper it is shown that the structure of the graph allows us to investigate the properties of the solutions of such equations.
openaire   +2 more sources

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