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Published in 2019 at "Circuits, Systems, and Signal Processing"
DOI: 10.1007/s00034-019-01048-7
Abstract: The asymptotic stability and ultimate boundedness of the solutions for nonlinear switched systems is investigated. It is assumed that every mode of the system is unstable. The required behaviour of the switched system is achieved… read more here.
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Published in 2017 at "Physica D: Nonlinear Phenomena"
DOI: 10.1016/j.physd.2016.09.003
Abstract: Abstract We study a billiard problem in nonlinear and nonequilibrium systems. This is motivated by the motions of a traveling spot in a reaction–diffusion system (RDS) in a rectangular domain. We consider a four-dimensional dynamical… read more here.
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Published in 2019 at "Physica D: Nonlinear Phenomena"
DOI: 10.1016/j.physd.2019.03.010
Abstract: Abstract We consider the scattering problem for the nonlinear Schrodinger equation with a potential in two space dimensions. Appropriate resolvent estimates are proved and applied to estimate the operator A ( s ) appearing in… read more here.
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Published in 2021 at "Arab Journal of Basic and Applied Sciences"
DOI: 10.1080/25765299.2021.1982500
Abstract: Abstract The aim of this work is to discuss the solvability of a boundary value problem for a nonlinear integro-differential equation. First, we derive an equivalent nonlinear Fredholm integral equation (NFIE) to this problem. Second,… read more here.
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Published in 2018 at "Differential Equations"
DOI: 10.1134/s001226611811006x
Abstract: For a distributed second-order differential equation, we consider the problem of constructing a control law ensuring that the solution of this equation tracks the solution of a standard equation subjected to an unknown disturbance. A… read more here.
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Published in 2018 at "Doklady Mathematics"
DOI: 10.1134/s1064562418070165
Abstract: The solution of the Cauchy problem for a nonlinear Schrödinger evolution equation with certain initial data is proved to blow up in a finite time, which is estimated from above. Additionally, lower bounds for the… read more here.
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Published in 2021 at "Abstract and Applied Analysis"
DOI: 10.1155/2021/5592010
Abstract: This article deals with some existence, uniqueness, and Ulam-Hyers-Rassias stability results for a class of boundary value problem for nonlinear implicit fractional differential equations with impulses and generalized Hilfer Fractional derivative. The results are obtained… read more here.
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Published in 2022 at "Acta Physica Polonica A"
DOI: 10.12693/aphyspola.141.64
Abstract: In this paper we have chosen to work with two different approaches to solving the inverse problem of the calculus of variation. The first approach is based on an integral representation of the Lagrangian function… read more here.