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Nonlinear wave equations on time dependent inhomogeneous backgrounds

PDE and Applied Math Seminar

Speaker: Shiwu Yang, Cambridge University, UK
Location: 2112 MSB
Start time: Tue, Apr 22 2014, 4:10PM

In this talk, I will talk about the nonlinear wave equations on a class of asymptotically flat Lorentzian manifolds ({R}^{3+1},g) with time dependent inhomogeneous metric g. Based on a new approach for proving the decay of solutions of linear wave equations, we give several applications to nonlinear problems. In particular, we will show the small data global existence result for quasilinear wave equations satisfying the null condition on a class of time dependent inhomogeneous backgrounds which do not settle to any particular stationary metric.