Geodesic
Stabilization of solutions of two-dimensional parabolic equations and related spectral problems
Eurasian mathematical journal, Tome 11 (2020) no. 1, pp. 72-85.

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One of the important properties that characterize the behaviour of solutions of boundary value problems for differential equations is stabilization, which has a direct relationship with the problems of controllability. In this paper, the problems of solvability are investigated for stabilization problems of two-dimensional loaded equations of parabolic type with the help of feedback control given on the boundary of the region. These equations have numerous applications in the study of inverse problems for differential equations. The problem consists in the choice of boundary conditions (controls), so that the solution of the boundary value problem tends to a given stationary solution at a certain speed at $t\to\infty$. This requires that the control is feedback, i.e. that it responds to unintended fluctuations in the system, suppressing the results of their impact on the stabilized solution. The spectral properties of the loaded two-dimensional Laplace operator, which are used to solve the initial stabilization problem, are also studied. The paper presents an algorithm for solving the stabilization problem, which consists of constructively implemented stages. The idea of reducing the stabilization problem for a parabolic equation by means of boundary controls to the solution of an auxiliary boundary value problem in the extended domain of independent variables belongs to A.V. Fursikov. At the same time, recently, the so-called loaded differential equations are actively used in problems of mathematical modeling and control of nonlocal dynamical systems. 
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M. Jenaliyev; K. Imanberdiyev; A. Kassymbekova; K. Sharipov. Stabilization of solutions of two-dimensional parabolic equations and related spectral problems. Eurasian mathematical journal, Tome 11 (2020) no. 1, pp. 72-85. http://geodesic.mathdoc.fr/item/EMJ_2020_11_1_a5/

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