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Almost global existence for the Neumann problem of quasilinear wave equations outside star-shaped domains in 3D. (English) Zbl 1387.35397

Summary: In this article, we prove the almost global existence of solutions for quasilinear wave equations in the complement of star-shaped domains in three dimensions, with a Neumann boundary condition.

MSC:

35L20 Initial-boundary value problems for second-order hyperbolic equations
74H20 Existence of solutions of dynamical problems in solid mechanics
74B20 Nonlinear elasticity
35L72 Second-order quasilinear hyperbolic equations