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An approach to the D-to-N operator via its symbol leads to a new fast algorithm for numerical solution of two-dimensional high-frequency diffraction problems even if the scatterer may not be convex. A desirable higher-dimensional generalization is not readily available due to symbol not being well defined globally; this fact prevents statements uniform with respect to the wavenumber. An exception is periodic (grating) problems with an appropriate radiation condition.
№ | Имя | Описание | Имя файла | Размер | Добавлен |
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1. | Презентация | 30 pp. | petr07.pdf | 327,1 КБ | 14 мая 2022 [sergesadov] |