Abstract
We consider a linear differential-algebraic system of PDEs with special matrix coefficients. Two cases are investigated. In the first one, the system has a small index, and the matrix at unknown vector-function, while the system written in the canonical form, is arbitrary. In the second case, the system has an arbitrary index, while a matrix at the small term is triangular. In both the cases, using the methods of characteristics and successive approximations, we prove the existence of a unique classical solution of mixed problems for the considered differential-algebraic systems of PDEs.
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Acknowledgments
The work is fulfilled within the project No.0348-216-0009 “Qualitative theory and numerical analysis of differential-algebraic equations” of the Siberian Branch of the Russian Academy of Science.
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Russian Text © The Author(s), 2019, published in Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika, 2019, No. 4, pp. 73–84.
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Svinina, S.V., Svinin, A.K. Existence of solution to some mixed problems for linear differential-algebraic systems of partial differential equations. Russ Math. 63, 64–74 (2019). https://doi.org/10.3103/S1066369X19040078
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DOI: https://doi.org/10.3103/S1066369X19040078