Results 1 to 10 of about 66,618 (146)

Strict and non-strict inequalities for implicit first order causal differential equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper, some fundamental differential inequalities for the implicit perturbations of nonlinear first order ordinary causal differential equations have been established.
Bapurao Dhage
doaj   +4 more sources

Dynamics, Noise, Delays and the Gibbs and Conditional Entropy [PDF]

open access: yesEntropy
In this paper we review the concepts of the Gibbs and conditional entropies and examine their dynamic behaviour when the underlying dynamics are described by ordinary differential equations or stochastic differential equations. We then go on to introduce
Michael C. Mackey, Marta Tyran-Kamińska
doaj   +2 more sources

Extended Differential Aggregations in Process Algebra for Performance and Biology [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2014
We study aggregations for ordinary differential equations induced by fluid semantics for Markovian process algebra which can capture the dynamics of performance models and chemical reaction networks. Whilst previous work has required perfect symmetry for
Max Tschaikowski, Mirco Tribastone
doaj   +5 more sources

Resolvent estimates for 2-dimensional perturbations of plane Couette flow

open access: yesElectronic Journal of Differential Equations, 2002
We present results concerning resolvent estimates for the linear operator associated with the system of differential equations governing 2 dimensional perturbations of plane Couette flow.
Pablo Braz e Silva
doaj   +5 more sources

Construction of stochastic differential equations of motion in canonical variables [PDF]

open access: yesҚарағанды университетінің хабаршысы. Математика сериясы, 2022
Galiullin proposed a classification of inverse problems of dynamics for the class of ordinary differential equations (ODE). Considered problem belongs to the first type of inverse problems of dynamics (of the three main types of inverse problems of ...
M.I. Tleubergenov   +2 more
doaj   +2 more sources

Numerical and asymptotic flow stability analysis of vortex structures [PDF]

open access: yesE3S Web of Conferences, 2021
Stability problem of an axisymmetric swirling flow of a viscous incompressible fluid with respect to nonaxisymmetric perturbations is considered. The system of ordinary differential equations for the amplitude functions is solved numerically by the Runge-
Akhmetov Vadim
doaj   +1 more source

1 + 3 covariant perturbations in power-law f(R) gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We applied the 1+3 covariant approach around the Friedmann–Lemaître–Robertson–Walker (FLRW) background, together with the equivalence between f(R) gravity and scalar-tensor theory to study cosmological perturbations.
Beatrice Murorunkwere   +2 more
doaj   +1 more source

Asymptotic behaviour of solutions of quasilinear differential-algebraic equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2022
This paper is concerned with the asymptotic behavior of solutions of linear differential-algebraic equations (DAEs) under small nonlinear perturbations.
Vu Hoang Linh, Ngo Nga, Nguyen Tuan
doaj   +1 more source

Passive identification of multivariable stabilization system elements’ dynamics

open access: yesАвтоматизация технологических и бизнес-процессов, 2020
Increasing domestic automatic control systems competitiveness requires the design work intensification based on the implementation of modern information technologies.
S. I. Osadchy, V. A. Zozulia
doaj   +1 more source

Transversal homoclinics in nonlinear systems of ordinary differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2000
Bifurcation of transversal homoclinics is studied for a pair of ordinary differential equations with periodic perturbations when the first unperturbed equation has a manifold of homoclinic solutions and the second unperturbed equation is vanishing.
Michal Fečkan
doaj   +1 more source

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