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Decay estimates for a class of wave equations

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 نشر من قبل Zihua Guo
 تاريخ النشر 2008
  مجال البحث
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In this paper we use a unified way studying the decay estimate for a class of dispersive semigroup given by $e^{itphi(sqrt{-Delta})}$, where $phi: mathbb{R}^+to mathbb{R}$ is smooth away from the origin. Especially, the decay estimates for the solutions of the Klein-Gordon equation and the beam equation are simplified and slightly improved.



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