Results 61 to 70 of about 1,052 (144)

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

Demonstratio 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

Results 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

Demonstratio 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, Šátek Václav, Nečasová Gabriela   +2 more
doaj   +1 more source

Langevin equation in terms of conformable differential operators

Analele 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, Agarwal Ravi P., Alghanmi Madeaha, Alsaedi Ahmed   +3 more
doaj   +1 more source

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

Advances 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

Geometry of the Abel Equation of the first kind

, 2014
We study the first kind Abel differential equation $$\dfrac{dy}{dx}=c_0(x)+3c_1(x)y+3c_2y^2+c_3(x)y^3,$$ where the functions $c_i$ are real analytic. The first step of our analysis is through the Cartan equivalence method, then we use techniques from ...
Wone, Oumar
core  

An improved Mickens’ solution for nonlinear vibrations

Alexandria Engineering Journal
The Duffing equation and other nonlinear equations of motion of nonlinear vibrations are widely applied in the fields of engineering and science, especially mechanical and electrical engineering.
M.M. Ayub Hossain, B.M. Ikramul Haque
doaj   +1 more source

The importance of quarantine: modelling the COVID-19 testing process. [PDF]

J Math Biol, 2023
Xu W, Shu H, Wang L, Wang XS, Watmough J.   +4 more
europepmc   +1 more source

Correction to “An Analysis on the Positive Solutions for a Fractional Configuration of the Caputo Multiterm Semilinear Differential Equation”

Journal of Function Spaces, Volume 2025, Issue 1, 2025.
wiley   +1 more source

Well-posedness and maximum principles for lattice reaction-diffusion equations

Advances in Nonlinear Analysis, 2017
Existence, uniqueness and continuous dependence results together with maximum principles represent key tools in the analysis of lattice reaction-diffusion equations.
Slavík Antonín, Stehlík Petr, Volek Jonáš   +2 more
doaj   +1 more source