This paper studies the existence and the non-existence of global solutions to the initial boundary value problems for the non-linear wave equation The paper proves that every above-mentioned problem has a unique global solution under rather mild con"ning conditions, and arrives at some su$cient con
Global Existence for a Quasilinear Wave Equation Outside of Star-Shaped Domains
β Scribed by Markus Keel; Hart F. Smith; Christopher D. Sogge
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 399 KB
- Volume
- 189
- Category
- Article
- ISSN
- 0022-1236
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β¦ Synopsis
We prove global existence of small-amplitude solutions of quasilinear Dirichletwave equations outside of star-shaped obstacles in (3+1)-dimensions. We use a variation of the conformal method of Christodoulou. Since the image of the spacetime obstacle is not static in the Einstein diamond, our results do not follows directly from local existence theory as did Christodoulou's for the nonobstacle case. Instead, we develop weighted estimates that are adapted to the geometry. Using them and the energy-integral method we obtain solutions in the Einstein diamond minus the dime-dependent obstacle, which pull back to solutions in Minkowski space minus and obstacle.
π SIMILAR VOLUMES
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The goal of this paper is to study the global existence of small data solutions to the Cauchy problem for the nonlinear wave equation In particular we are interested in statements for the 1D case. We will explain how the interplay between the increasing and oscillating behavior of the coefficient w
## Abstract We shall derive some global existence results to semilinear wave equations with a damping coefficient localized near infinity for very special initial data in __H__Γ__L__^2^. This problem is dealt with in the twoβdimensional exterior domain with a starβshaped complement. In our result,