Low frequency asymptotics for the reduced wave equation in two‐dimensional exterior spaces
作者:
P. Werner,
期刊:
Mathematical Methods in the Applied Sciences
(WILEY Available online 1986)
卷期:
Volume 8,
issue 1
页码: 134-156
ISSN:0170-4214
年代: 1986
DOI:10.1002/mma.1670080110
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractWe consider the Dirichlet problem for the reduced wave equation ΔUx+x2Ux= 0 in a two‐dimensional exterior domain with boundaryC, whereCconsists of a finite number of smooth closed curvesC1,…,Cm. The question of interest is the behavior ofUxas ϰ → 0. We show thatUconverges to the solution of the corresponding exterior Dirichlet problem of potential theory if the boundary data converge to a limit uniformly onC.This generalizes a well‐known result of R. C. MacCamy for the
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