We consider the problem of existence of the solution of a boundary-value problem for a singularly perturbed linear system of differential equations in the case of multiple spectrum of the boundary matrix.
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Translated from Neliniini Kolyvannya, Vol. 21, No. 4, pp. 444–456, October–December, 2018.
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Vira, M.B. Asymptotics of the Solutions of Boundary-Value Problems for Linear Singularly Perturbed Systems of Differential Equations in the Case of Multiple Spectrum of the Boundary Matrix. J Math Sci 246, 303–316 (2020). https://doi.org/10.1007/s10958-020-04740-1
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DOI: https://doi.org/10.1007/s10958-020-04740-1