Results 1 to 10 of about 290,052 (170)

Polynomial Solutions of Equivariant Polynomial Abel Differential Equations [PDF]

open access: yesAdvanced Nonlinear Studies, 2018
Let a⁢(x){a(x)} be non-constant and let bj⁢(x){b_{j}(x)}, for j=0,1,2,3{j=0,1,2,3}, be real or complex polynomials in the variable x. Then the real or complex equivariant polynomial Abel differential equation a⁢(x)⁢y˙=b1⁢(x)⁢y+b3⁢(x)⁢y3{a(x)\dot{y}=b_{1}(
Llibre Jaume, Valls Clàudia
doaj   +7 more sources

Exponential Polynomials and Nonlinear Differential-Difference Equations [PDF]

open access: yesJournal of Function Spaces, 2020
In this paper, we study finite-order entire solutions of nonlinear differential-difference equations and solve a conjecture proposed by Chen, Gao, and Zhang when the solution is an exponential polynomial.
Junfeng Xu, Jianxun Rong
doaj   +2 more sources

Solving and classifying the solutions of the Yang-Baxter equation through a differential approach. Two-state systems

open access: yesJournal of High Energy Physics, 2018
The formal derivatives of the Yang-Baxter equation with respect to its spectral parameters, evaluated at some fixed point of these parameters, provide us with two systems of differential equations.
R. S. Vieira
doaj   +4 more sources

Conditions for asymptotic stability of first order scalar differential-difference equation with complex coefficients [PDF]

open access: yesArchives of Control Sciences, 2023
We investigate a scalar characteristic exponential polynomial with complex coefficients associated with a first order scalar differential-difference equation.
Rafał Kapica, Radosław Zawiski
doaj   +1 more source

Solution of Inhomogeneous Fractional Differential Equations with Polynomial Coefficients in Terms of the Green’s Function, in Nonstandard Analysis

open access: yesMathematics, 2021
Discussions are presented by Morita and Sato in Mathematics 2017; 5, 62: 1–24, on the problem of obtaining the particular solution of an inhomogeneous ordinary differential equation with polynomial coefficients in terms of the Green’s function, in the ...
Tohru Morita, Ken-ichi Sato
doaj   +1 more source

New optical soliton solutions to the (n+1) dimensional time fractional order Sinh-Gordon equation

open access: yesResults in Physics, 2023
This article studies and constructs new optical soliton solutions for the (n+1)-dimensional time fractional order Sinh-Gordon equation. First, we change the differential equation into Ordinary differential equation which is connected with a quartic ...
Da Shi, Zhao Li
doaj   +1 more source

Interpretable polynomial neural ordinary differential equations

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2023
Neural networks have the ability to serve as universal function approximators, but they are not interpretable and do not generalize well outside of their training region. Both of these issues are problematic when trying to apply standard neural ordinary differential equations (ODEs) to dynamical systems. We introduce the polynomial neural ODE, which is
Colby Fronk, Linda Petzold
openaire   +5 more sources

Differential Equations for Jacobi-Pineiro Polynomials [PDF]

open access: yesComputational Methods and Function Theory, 2006
For $r\in \Z_{\geq 0}$, we present a linear differential operator %$(\di)^{r+1}+ a_1(x)(\di)^{r}+...+a_{r+1}(x)$ of order $r+1$ with rational coefficients and depending on parameters. This operator annihilates the $r$-multiple Jacobi-Pi eiro polynomial.
Mukhin, Eugene, Varchenko, Alexander
openaire   +2 more sources

Gradient Structures Associated with a Polynomial Differential Equation

open access: yesMathematics, 2020
In this paper, by using the characteristic system method, the kernel of a polynomial differential equation involving a derivation in R n is described by solving the Cauchy Problem for the corresponding first order system of PDEs.
Savin Treanţă
doaj   +1 more source

Simple Equations Method and Non-Linear Differential Equations with Non-Polynomial Non-Linearity

open access: yesEntropy, 2021
We discuss the application of the Simple Equations Method (SEsM) for obtaining exact solutions of non-linear differential equations to several cases of equations containing non-polynomial non-linearity. The main idea of the study is to use an appropriate
Nikolay K. Vitanov   +1 more
doaj   +1 more source

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