Results 61 to 70 of about 182 (154)

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

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

A fractional order pyrolysis model with Atangana-Baleanu-Caputo derivative: analysis and numerical simulation

open access: yesOpen Engineering
Pyrolysis is key to transforming biomass and organic waste into useful energy products. However, standard integer-order models poorly capture the memory and heredity effects that significantly affect the thermal decomposition dynamics of pyrolysis.
Ali Mumtaz   +5 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  

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  

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

Theory and applications of first-order systems of Stieltjes differential equations

open access: yesAdvances in Nonlinear Analysis, 2017
We set up the basic theory of existence and uniqueness of solutions for systems of differential equations with usual derivatives replaced by Stieltjes derivatives.
Frigon Marlène, Pouso Rodrigo López
doaj   +1 more source

Approximating solutions of Hammerstein Type equations in Banach Spaces

open access: yes, 2019
Let X be a real Banach space and X* be its dual. Let F : X → X* and K : X → X* be Lipschitz monotone mappings. In this paper an explicit iterative scheme is constructed for approximating solutions of the Hammerstein type equation, 0 = u + KFu; when they ...
Tufa, Abebe R., Zegeye, H, Daman, O
core  

Nonlinear Hamiltonian systems and exponential asymptotics for the adiabatic invariants

open access: yes, 1999
In this paper, for a symmetric nonlinear oscillator, we show that to the leading order, the adiabatic invariant is equivalent to the quantity y'(0), where y is a family of adiabatically symmetric solutions. The leading order of the latter quantity can be
Hu, Jishan
core  

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