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On some boundary value problems for a hyperbolic equation degenerating inside of the domain. (Russian) Zbl 0452.35076


MSC:

35L20 Initial-boundary value problems for second-order hyperbolic equations
35L80 Degenerate hyperbolic equations
35A05 General existence and uniqueness theorems (PDE) (MSC2000)
35A30 Geometric theory, characteristics, transformations in context of PDEs
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