Results 21 to 30 of about 368,146 (227)

Critical Transitions in Piecewise Uniformly Continuous Concave Quadratic Ordinary Differential Equations [PDF]

open access: yesJournal of Dynamics and Differential Equations, 2021
A critical transition for a system modelled by a concave quadratic scalar ordinary differential equation occurs when a small variation of the coefficients changes dramatically the dynamics, from the existence of an attractor–repeller pair of hyperbolic ...
Iacopo P. Longo, C. N'unez, R. Obaya
semanticscholar   +1 more source

Properties of the integral curve and solving of non-autonomous system of ordinary differential equations

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
In this paper, we consider non-autonomous system of ordinary differential equations. For a given non-autonomous system, we introduce the distribution probability-density function of representative points of the ensemble of Gibbs, possessing all the ...
Gennady A Rudykh, Daria J Kiselevich
doaj   +3 more sources

Significance of viscosity and thermal conductivity variation parameters on the dynamics of Newtonian fluid conveying tiny particles over a convectively heated surface

open access: yesPartial Differential Equations in Applied Mathematics, 2021
The significance of viscosity and thermal conductivity variation parameters on the dynamics of Newtonian fluid conveying tiny particles over a convectively heated surface is examined.
O.A. Famakinwa   +3 more
doaj   +1 more source

On the discrete and continuous Miura Chain associated with the Sixth Painlevé Equation [PDF]

open access: yes, 1999
A Miura chain is a (closed) sequence of differential (or difference) equations that are related by Miura or B\"acklund transformations. We describe such a chain for the sixth Painlev\'e equation (\pvi), containing, apart from \pvi itself, a Schwarzian ...
Ablowitz   +25 more
core   +3 more sources

On a linear system of differential equations

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2019
The linear systems of partial differential equations of the first order with the identical main parts is considered. Аpplying the well-known relation between a normal system of ordinary differential equations and a linear system of partial differential
T. М. Aldibekov, M. M. Aldazharova
doaj   +1 more source

MODIFICATION OF THE PARAMETRIZATION METHOD FOR SOLVING A BOUNDARY VALUE PROBLEM FOR LOADED DIFFERENTIAL EPCAG E. Bakirova

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
In this paper, modification of Dzhumabaev parameterization method is developed to a boundary value problem for systems of loaded differential equations with piecewise constant argument of generalized type (EPCAG).
E. Bakirova   +2 more
doaj   +1 more source

ChemNODE: A Neural Ordinary Differential Equations Framework for Efficient Chemical Kinetic Solvers [PDF]

open access: yesEnergy and AI, 2020
Solving for detailed chemical kinetics remains one of the major bottlenecks for computational fluid dynamics simulations of reacting flows using a finite-rate-chemistry approach. This has motivated the use of fully connected artificial neural networks to
Opeoluwa Owoyele, P. Pal
semanticscholar   +1 more source

Model of the telegraph line and its numerical solution [PDF]

open access: yes, 2018
This paper deals with a model of the telegraph line that consists of system of ordinary differential equations, rather than partial differential telegraph equation. Numerical solution is then based on an original mathematical method. This method uses the
Nečasová, Gabriela   +2 more
core   +1 more source

Semi-analytical solutions of flow and heat transfer of fluid along expandable-stretching horizontal cylinder

open access: yesCase Studies in Thermal Engineering, 2021
In the presence of suction/injection, a mathematical formulation for laminar boundary layer flow and heat transfer of an incompressible viscous fluid along an expandable-stretching horizontal cylinder is provided.
Mohamed Fathy, K.M. Abdelgaber
doaj   +1 more source

Spectral theory for systems of ordinary differential equations with distributional coefficients [PDF]

open access: yesJournal of Differential Equations, 2018
We study the spectral theory for the first-order system $Ju'+qu=wf$ of differential equations on the real interval $(a,b)$ when $J$ is a constant, invertible skew-Hermitian matrix and $q$ and $w$ are matrices whose entries are distributions of order zero
Ahmed Ghatasheh, R. Weikard
semanticscholar   +1 more source

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