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 |