Asymptotic solutions of singularly perturbed integro-differential systems with rapidly oscillating coefficients in the case of a simple spectrum
Bobodzhanov A. Kalimbetov B. Safonov V.
2021American Institute of Mathematical Sciences
AIMS Mathematics
2021#6Issue 88835 - 8853 pp.
In this paper, we consider a system with rapidly oscillating coefficients, which includes an integral operator with an exponentially varying kernel. The main goal of the work is to develop the algorithm of Lomov’s the regularization method for such systems and to identify the influence of the integral term on the asymptotics of the solution of the original problem. The case of identical resonance is considered, i.e. the case when an integer linear combination of the eigenvalues of a rapidly oscillating coefficient coincides with the points of the spectrum of the limit operator is identical on the entire considered time interval. In addition, the case of coincidence of the eigenvalue of a rapidly oscillating coefficient with the points of the spectrum of the limit operator is excluded. This case is supposed to be studied in our subsequent works. More complex cases of resonance (for example, point resonance) require a more thorough analysis and are not considered in this paper.
Integro-differential equation , Iterative problems , Regularization of an integral , Singularly perturbed , Solvability of iterative problems , Space of non-resonant solutions
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Department of Higher Mathematics, National Research University, MPEI, Krasnokazarmennaya 14, Moscow, 111250, Russian Federation
Department of Mathematics, Khoja Ahmet Yasawi International Kazakh-Turkish University, B. Sattarkhanov 29, Turkestan, 161200, Kazakhstan
Department of Higher Mathematics
Department of Mathematics
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