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Convergence in a quasilinear parabolic equation with time almost periodic boundary conditions

2012; Elsevier BV; Volume: 75; Issue: 17 Linguagem: Inglês

10.1016/j.na.2012.07.009

1873-5215

Jingjing Cai, Bendong Lou,

Stability and Controllability of Differential Equations

Consider the problem ut=a(ux)uxx+f(ux)(|x| 0),ux(±1,t)=±g(t)(t>0), where g(t) is an almost periodic function. We prove the following convergence results. If a time-global solution u is bounded, then it converges to an almost periodic solution which is unique up to space shift, stable and asymptotically stable; if u goes to infinity with positive lower average speed, then it converges to an almost periodic traveling wave which is unique up to space shift, stable, asymptotically stable and has positive average speed.