Almost global existence for nonlinear wave equations in an exterior domain in two space dimensions

作者：Kubo Hideo^*

来源：Journal of Differential Equations, 2014, 257(8): 2765-2800.

DOI：10.1016/j.jde.2014.05.048

• Exterior problem
• Nonlinear wave equation
• Lifespan

In this paper we deal with the exterior problem for a system of nonlinear wave equations in two space dimensions, assuming that the initial data is small and smooth. We establish the same type of lower bound of the lifespan for the problem as that for the Cauchy problem, despite of the weak decay property of the solution in two space dimensions.

• 出版日期2014-10-15