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The dynamics of rays in a neighbourhood of points of straightening of the boundary. (Russian) Zbl 0472.35038


MSC:

35J10 Schrödinger operator, Schrödinger equation
78A40 Waves and radiation in optics and electromagnetic theory
65M99 Numerical methods for partial differential equations, initial value and time-dependent initial-boundary value problems
65N99 Numerical methods for partial differential equations, boundary value problems