Results 11 to 20 of about 230,291 (288)

CANONICAL APPROXIMATIONS IN IMPULSE STABILIZATION FOR A SYSTEM WITH AFTEREFFECT

open access: yesUral Mathematical Journal, 2023
For optimal stabilization of an autonomous linear system of differential equations with aftereffect and impulse controls, the formulation of the problem in the functional state space is used.
Yuri F. Dolgii
doaj   +1 more source

On Homogeneous Descriptor Systems and Homogeneity-Based Finite-Time Control of Linear Descriptor Systems

open access: yesIEEE Access, 2022
A new definition of homogeneity for descriptor systems is introduced. The homogeneity property can be verified algebraically, and, as for systems described by ordinary differential equations only, it implies scalability of solutions.
Dmitry E. Konovalov   +4 more
doaj   +1 more source

Linearizability of Systems of Ordinary Differential Equations Obtained by Complex Symmetry Analysis [PDF]

open access: yes, 2011
Five equivalence classes had been found for systems of two second-order ordinary differential equations, transformable to linear equations (linearizable systems) by a change of variables.
Ali, Sajid   +2 more
core   +3 more sources

The remarkable effectiveness of time-dependent damping terms for second order evolution equations [PDF]

open access: yes, 2015
We consider a second order linear evolution equation with a dissipative term multiplied by a time-dependent coefficient. Our aim is to design the coefficient in such a way that all solutions decay in time as fast as possible.
Ghisi, Marina   +2 more
core   +4 more sources

A Generalized Solution of an Initial Boundary Value Problem Arising in the Mechanics of Discrete-Continuous Systems

open access: yesМоделирование и анализ информационных систем, 2015
In this paper we define a generalized solution of an initial boundary value problem for a linear system of differential equations with one ordinary differential equation and two partial differential equations (a hybrid system of differential equations ...
E. P. Kubyshkin, O. A. Khrebtyugova
doaj   +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

Oscillation and asymptotic behavior of systems of ordinary linear differential equations [PDF]

open access: yesTransactions of the American Mathematical Society, 1979
Conditions are established for oscillatory and asymptotic behavior for first-order matrix systems of ordinary differential equations, including Hamiltonian systems in the selfadjoint case. Asymptotic results of Hille, Shreve, and Hartman are generalized. Disconjugacy criteria of Ahlbrandt, Tomastik, and Reid are extended.
openaire   +2 more sources

On bounded solutions of differential systems

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2022
The question of the existence of bounded solutions on an infinite interval of a linear inhomogeneous system of ordinary differential equations in a finite-dimensional space is considered. The study of bounded solutions of systems of ordinary differential
T. M. Aldibekov
doaj  

Hamiltonian and Variational Linear Distributed Systems [PDF]

open access: yes, 2002
We use the formalism of bilinear- and quadratic differential forms in order to study Hamiltonian and variational linear distributed systems. It was shown in [1] that a system described by ordinary linear constant-coefficient differential equations is ...
Rapisarda, Paolo, Trentelman, Harry L.
core   +3 more sources

Calculation of special functions arising in the problem of diffraction by a dielectric ball

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2021
To apply the incomplete Galerkin method to the problem of the scattering of electromagnetic waves by lenses, it is necessary to study the differential equations for the field amplitudes. These equations belong to the class of linear ordinary differential
Ksaverii Yu. Malyshev
doaj   +1 more source

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