Results 71 to 80 of about 334 (177)

Periodic solutions for a system of totally nonlinear dynamic equations on time scale

open access: yes, 2016
Let T be a periodic time scale. We use a reformulated version of Krasnoselskii’s fixed point theorem to show that the system of nonlinear neutral dynamic equation with delay x .t/D A.t/H.x .t//C .Q.t;x.t r.t///// CG t;x.t/;x.t r.t// ; t 2 T ; has ...
E. Yankson
semanticscholar   +1 more source

Normal forms of piecewise-smooth monodromic systems

open access: yesAdvances in Nonlinear Analysis
Normal form is an important tool in the study of bifurcations but, unlike those for smooth differential systems, normal forms for piecewise-smooth systems have difficulty with the near-identity transformation, which is constructed piecewise but needs to ...
Li Jiahao, Chen Xingwu, Zhang Weinian
doaj   +1 more source

Stability analysis of second-order differential systems with Erlang distribution random impulses

open access: yes, 2013
Differential systems with random impulses are a new kind of mathematical models. In this paper, we put forward a model of second-order impulsive differential systems with Erlang distribution random impulses.
Shuorui Zhang, Jitao Sun
semanticscholar   +1 more source

Generic polynomial vector fields are not integrable *

open access: yes, 2020
We study some generic aspects of polynomial vector fields or polynomial derivations with respect to their integration. In particular, using a well-suited presentation of Darboux polynomials at some Darboux point as power series in local Darboux ...
Andrzej J Maciejewski   +2 more
core  

Higher-order impulsive coupled systems with ϕ-Laplacian and generalized jump conditions

open access: yesDemonstratio Mathematica
This work contains a general theory for coupled systems, with regular and singular semi-linear fully differential equations of higher order, with the possibility of equations of different order and generalized impulsive effects, depending on both ...
Minhós Feliz, Rodrigues Gracino
doaj   +1 more source

Dynamic ecological system measures

open access: yesResults in Applied Mathematics, 2019
The system decomposition theory has recently been developed for the dynamic analysis of nonlinear compartmental systems. The application of this theory to the ecosystem analysis has also been introduced in a separate article.
Huseyin Coskun
doaj   +1 more source

Effective solution of nonlinear DAEs problems using Taylor series method

open access: yesDemonstratio Mathematica
Most methods for solving ordinary differential equations use a limited order to calculate the results. The higher-order method based on the Taylor series presented in this article can use as many terms of the Taylor series as necessary to obtain a stable
Veigend Petr   +2 more
doaj   +1 more source

A Study on Iterative Solution of Population Dynamics Models

open access: yes, 2012
In this paper, simple approximate solutions of differential equations pertaining to population dynamics are obtained using iterative method. When the order of approximation tends to infinity, the solutions obtained converge towards an exact solution in ...
Ganeswara Rao   +3 more
core  

Langevin equation in terms of conformable differential operators

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2020
In this paper, we establish sufficient criteria for the existence of solutions for a new kind of nonlinear Langevin equation involving conformable differential operators of different orders and equipped with integral boundary conditions.
Ahmad Bashir   +3 more
doaj   +1 more source

AVersatile Spectral Matrix Collocation Method for Tackling Bratu, Riccati, and Higher Order Linear and Nonlinear Differential Equations Containing Delay Variables

open access: yes
 This study presents a numerical matrix collocation method for solving Bratu equations, Riccati equations, and high-order linear/nonlinear differential equations with delay variables—all of which hold significant importance in the literature ...
Baykuş Savaşaneril, Nurcan   +1 more
core   +1 more source

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