Results 61 to 70 of about 1,031 (124)

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

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

Geometry of the Abel Equation of the first kind

open access: yes, 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  

A geometric approach to integrability conditions for Riccati equations

open access: yes, 2007
Several instances of integrable Riccati equations are analyzed from the geometric perspective of the theory of Lie systems.
Cariñena, Jose F.   +2 more
core   +3 more sources

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

open access: yesJ Math Biol, 2023
Xu W   +4 more
europepmc   +1 more source

An improved Mickens’ solution for nonlinear vibrations

open access: yesAlexandria 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

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

open access: yesAdvances 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   +2 more
doaj   +1 more source

Absolute concentration robustness and multistationarity in reaction networks: Conditions for coexistence

open access: yesEuropean Journal of Applied Mathematics
Many reaction networks arising in applications are multistationary, that is, they have the capacity for more than one steady state, while some networks exhibit absolute concentration robustness (ACR), which means that some species concentration is the ...
Nidhi Kaihnsa, Tung Nguyen, Anne Shiu
doaj   +1 more source

Existence and Multiplicity Results for Systems of First-Order Differential Equations via the Method of Solution-Regions

open access: yesAdvanced Nonlinear Studies, 2018
In this paper, we establish existence and multiplicity results for systems of first-order differential equations. To this end, we introduce the method of solution-regions.
Frigon Marlène
doaj   +1 more source

Home - About - Disclaimer - Privacy