A METHOD OF JOINING ASYMPTOTIC EXPANSIONS FOR THE EQUATION $ \epsilon\Delta u-a(x,\,y)u_y=f(x,\,y)$ IN A RECTANGLE

DOI10.1070/SM1975V025N04ABEH002461zbMath0328.35024MaRDI QIDQ4093836

E. F. Lelikova, A. M. Il'in

Publication date: 1976

Published in: Mathematics of the USSR-Sbornik (Search for Journal in Brave)

Mathematics Subject Classification ID

Asymptotic behavior of solutions to PDEs (35B40) Boundary value problems for second-order elliptic equations (35J25) Singular perturbations in context of PDEs (35B25)

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Asymptotics of the solution of a singular optimal distributed control problem with essential constraints in a convex domain

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