Lp decay problem for the dissipative wave equation in odd dimensions

Lp decay problem for the dissipative wave equation in odd dimensions
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奇维耗散波动方程的 Lp 衰减问题

DOI:
10.1016/j.jmaa.2004.12.057
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发表时间:
2005
影响因子:
1.3
通讯作者:
K. Ono
K. Ono
中科院分区:
数学3区
文献类型:
--
作者:
K. Ono

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考虑奇维耗散波动方程(□+<$t)u=0在R2 n +1×(0,∞)中的Cauchy问题,其中(u,<$tu)|t=0=(u0,u1)。由于解u(t)的L ~ 2估计和L ~ ∞估计是众所周知的,本文主要研究了当t ≥ 0时解u(t)的L ~ p估计,其中1 ≤ p<2(特别是p=1).为了得到L_p估计,我们首先给出了解u(t)=<$tS(t)u 0 +S(t)(u 0 +u1)的表示公式,然后直接估计了具有初值(u 0,u1)=(0,g)的耗散波动方程的精确解S(t)g及其导数<$tS(t)g.特别地,当p=1且n = 1时,我们得到t = 0时的L1估计:[公式:见正文]。
Consider the Cauchy problem in odd dimensions for the dissipative wave equation: (□+∂t)u=0 in R2n+1×(0,∞) with (u,∂tu)|t=0=(u0,u1). Because the L2estimates and the L∞estimates of the solution u(t) are well known, in this paper we pay attention to the Lpestimates with 1⩽p<2 (in particular, p=1) of the solution u(t) for t⩾0. In order to derive Lpestimates we first give the representation formulas of the solution u(t)=∂tS(t)u0+S(t)(u0+u1) and then we directly estimate the exact solution S(t)g and its derivative ∂tS(t)g of the dissipative wave equation with the initial data (u0,u1)=(0,g). In particular, when p=1 and n⩾1, we get the L1estimate: [Formula: see text] for t⩾0.
DOI: 10.57262/die/1356060352
发表时间: 2004-01
影响因子: 1.4
作者:
N. Hayashi;E. Kaikina;P. Naumkin
通讯作者: N. Hayashi;E. Kaikina;P. Naumkin
外部域中耗散波动方程的 L^1 估计
DOI: --
发表时间: 2007
期刊: Journal of Mathematical Analysis and Applications Vol.333 No.2
影响因子: --
作者:
Yoshihiro Shibata;Senjo Shimizu;T.Makino;T.Makino;Y.Matsuno;Y.Matsuno;T.Makino;Y.Matsuno;Y.Matsuno;T.Makino;Y.Matsuno;Y.Matsuno;Y.Matsuno;Y.Matsuno;Y.Matsuno;T.makino;Kosuke Ono;小野公輔;Kosuke Ono
通讯作者: Kosuke Ono