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The purpose of this paper is to show how local energy decay estimates for certain linear wave equations involving compact perturbations of the standard Laplacian lead to optimal global existence theorems for the corresponding small…

Analysis of PDEs · Mathematics 2013-01-29 Kunio Hidano , Jason Metcalfe , Hart F. Smith , Christopher D. Sogge , Yi Zhou

In this paper we verify the Strauss conjecture for semilinear wave equations on asymptotically Euclidean manifolds when n=3,4, we also give an almost sharp life span for the subcritical case $2\le p<p_c$ when n=3. The main ingredients…

Analysis of PDEs · Mathematics 2011-07-06 Chengbo Wang , Xin Yu

We establish the Strauss conjecture for nontrapping obstacles when the spatial dimension $n$ is two. As pointed out in \cite{HMSSZ} this case is more subtle than $n=3$ or 4 due to the fact that the arguments of the first two authors…

Analysis of PDEs · Mathematics 2015-03-17 Hart F. Smith , Christopher D. Sogge , Chengbo Wang

We obtain KSS, Strichartz and certain weighted Strichartz estimate for the wave equation on $(\R^d, \mathfrak{g})$, $d \geq 3$, when metric $\mathfrak{g}$ is non-trapping and approaches the Euclidean metric like $ x ^{- \rho}$ with…

Analysis of PDEs · Mathematics 2011-02-03 Christopher D. Sogge , Chengbo Wang

We prove certain weighted Strichartz estimates and use these to prove a sharp theorem for global existence of small amplitude solutions of $\square u= |u|^p$, thus verifying the so-called "Strauss conjecture".

Analysis of PDEs · Mathematics 2007-05-23 V. Georgiev , Hans Lindblad , Christopher D. Sogge

We prove global-in-time Strichartz estimates for the shifted wave equations on non-trapping asymptotically hyperbolic manifolds. The key tools are the spectral measure estimates from \cite{CH2} and arguments borrowed from \cite{HZ, Zhang}.…

Analysis of PDEs · Mathematics 2019-10-08 Yannick Sire , Christopher D. Sogge , Chengbo Wang , Junyong Zhang

Strichartz-type estimates for one-dimensional surface water-waves under surface tension are studied, based on the formulation of the problem as a nonlinear dispersive equation. We establish a family of dispersion estimates on time scales…

Analysis of PDEs · Mathematics 2009-10-09 Hans Christianson , Vera Mikyoung Hur , Gigliola Staffilani

In this manuscript, we focus on the more delicate nonlinearity of the semilinear wave equation $$\partial_{t}^2 u-\Delta_{\mathbb{R}^3}u=|u|^{p_S}\mu(|u|)\ ,u(0,x)=\varepsilon u_0,\ u_t(0,x)=\varepsilon u_1\ ,$$ where $p_S=1+\sqrt{2}$ is…

Analysis of PDEs · Mathematics 2024-05-22 Chengbo Wang , Xiaoran Zhang

Firstly, we study the equation $\square u = |u|^{q_c}+ |\partial u|^p$ with small data, where $q_c$ is the critical power of Strauss conjecture and $p\geq q_c.$ We obtain the optimal lifespan…

Analysis of PDEs · Mathematics 2019-04-25 Wei Dai , Daoyuan Fang , Chengbo Wang

In this paper, we consider the blow-up problem of semilinear generalized Tricomi equation. Two blow-up results with lifespan upper bound are obtained under subcritical and critical Strauss type exponent. In the subcritical case, the proof…

Analysis of PDEs · Mathematics 2019-06-04 Jiayun Lin , Ziheng Tu

In this review paper, we summarize the current state-of-art on the Strauss conjecture with nontrapping obstacles. Among others, three essential estimates are emphasized and presented: Morawetz-KSS estimates (also known as local energy…

Analysis of PDEs · Mathematics 2014-03-14 Chengbo Wang , Xin Yu

A coupled system of semilinear wave equations is considered, and a small data global existence result related to the Strauss conjecture is proved. Previous results have shown that one of the powers may be reduced below the critical power…

Analysis of PDEs · Mathematics 2017-01-23 Jason Metcalfe , David Spencer

We prove global Strichartz estimates without loss for the wave equation outside two strictly convex obstacles, following the roadmap introduced in [Lafontaine, 2017] for the Schr\"odinger equation. Moreover, we show a first step toward the…

Analysis of PDEs · Mathematics 2018-01-11 David Lafontaine

We establish a mixed-norm Strichartz type estimate for the wave equation on Riemannian manifolds $(\Omega,g)$, for the case that $\Omega$ is the exterior of a smooth, normally hyperbolic trapped obstacle in $n$ dimensional Euclidean space,…

Analysis of PDEs · Mathematics 2015-07-21 Hongtan Sun

We obtain global Strichartz estimates for the solution $u$ of the wave equation $\partial_t^2 u-\Div_x(a(t,x)\nabla_xu)=0$ with time-periodic metric $a(t,x)$ equal to 1 outside a compact set with respect to $x$. We assume $a(t,x)$ is a…

Analysis of PDEs · Mathematics 2011-02-22 Yavar Kian

In this paper, we study the Strichartz-type estimates of the solution for the linear wave equation with inverse square potential. Assuming the initial data possesses additional angular regularity, especially the radial initial data, the…

Analysis of PDEs · Mathematics 2013-12-09 Changxing Miao , Junyong Zhang , Jiqiang Zheng

In this paper, we show that certain local Strichartz estimates for solutions of the wave equation exterior to a convex obstacle can be extended to estimates that are global in both space and time. This extends the work that was done…

Analysis of PDEs · Mathematics 2007-05-23 Jason Metcalfe

In this paper, we explore the relations between different kinds of Strichartz estimates and give new estimates in Euclidean space $\mathbb{R}^n$. In particular, we prove the generalized and weighted Strichartz estimates for a large class of…

Analysis of PDEs · Mathematics 2012-07-24 Jin-Cheng Jiang , Chengbo Wang , Xin Yu

By assuming certain local energy estimates on $(1+3)$-dimensional asymptotically flat space-time, we study the existence portion of the \emph{Strauss} type wave system. Firstly we give a kind of space-time estimates which are related to the…

Analysis of PDEs · Mathematics 2020-10-12 Wei Dai , Daoyuan Fang , Chengbo Wang

Considering $1+n$ dimensional semilinear wave equations with energy supercritical powers $p> 1+4/(n-2)$, we obtain global solutions for any initial data with small norm in $H^{s_c}\times H^{s_c-1}$, under the technical smooth condition…

Analysis of PDEs · Mathematics 2023-12-22 Kerun Shao , Chengbo Wang
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