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BOUNDARY VALUE PROBLEMS WITH CONJUGATION CONDITIONS FOR QUASI-PARABOLIC EQUATIONS OF THE THIRD ORDER WITH A DISCONTINUOUS SIGN-VARIABLE COEFFICIENT Full article

Journal Сибирские электронные математические известия (Siberian Electronic Mathematical Reports)
, E-ISSN: 1813-3304
Output data Year: 2021, Volume: 18, Number: 1, Pages: 599-616 Pages count : 18 DOI: 10.33048/semi.2021.18.043
Tags boundary value problems; conjugation conditions; discontinuous signvariable coefficient; existence; regular solutions; third order quasi-parabolic equations; uniqueness
Authors Kozhanov A.I. 1 , Shadrina N.N. 2
Affiliations
1 Sobolev Institute of Mathematics, 4, KOPTYUGA AVE., Novosibirsk, 630090, Russian Federation
2 Buryat State University, 24a, Smolina str. Ulan-Ude, Buryatiya, 670000

Funding (1)

1 Sobolev Institute of Mathematics 0314-2019-0010

Abstract: The aim of this work is to study the solvability in Sobolev spaces of boundary value problems for third order differential equations with a discontinuous sign-variable coefficient at the highest derivative with respect to the time variable. Since the equation has a discontinuous leading coefficient, in addition to setting the boundary conditions it is also necessary to set some conjugation conditions. For the problems under study, existence and uniqueness theorems are proved for the class of regular solutions, i.e., for the solutions that have all Sobolev weak derivatives up to the third order in time variable and up to the second order in spatial variables. © 2021 Kozhanov A.I., Shadrina N.N. All Rights Reserved.
Cite: Kozhanov A.I. , Shadrina N.N.
BOUNDARY VALUE PROBLEMS WITH CONJUGATION CONDITIONS FOR QUASI-PARABOLIC EQUATIONS OF THE THIRD ORDER WITH A DISCONTINUOUS SIGN-VARIABLE COEFFICIENT
Сибирские электронные математические известия (Siberian Electronic Mathematical Reports). 2021. V.18. N1. P.599-616. DOI: 10.33048/semi.2021.18.043 WOS Scopus OpenAlex
Identifiers:
Web of science: WOS:000674354000001
Scopus: 2-s2.0-85108828968
OpenAlex: W3201059311
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