Mathematical Research Letters

Volume 16 (2009)

Number 5

Polynomial decay for damped wave equations on partially rectangular domains

Pages: 881 – 894



Hisashi Nishiyama (Department of Mathematics, Osaka University, Osaka, Japan)


We consider the energy decay of a damped wave equation on the partially rectangular domain. By using integration by parts, assuming that the damping only exists near the boundary of non-rectangular part, we can prove the polynomial type energy decay. We also give some examples which are not available in the literature.

2010 Mathematics Subject Classification

35L05, 47A10, 47B44, 47D06, 49J20

Published 1 January 2009