DECAY OF SOLUTIONS OF THE WAVE-EQUATION OUTSIDE ROUGH SURFACES

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作者
DUCOMET, B
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O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
We prove the decay of local energy for the solutions of the wave equation in an exterior domain outside a two-dimensional rough surface in R3 which satisfies an additional geometric condition, implying the absence of trapped rays. Moreover, if a stronger ''star-shaped'' condition is added, the decay is C/t.
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页码:429 / 433
页数:5
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