Abstract
We consider the mean curvature flow V=H in a cylinder ΩâBĂR, where B is the unit ball in RN, V is the normal velocity of a moving surface Ît:xN+1=u(x,t)(xâB) and H is the mean curvature of Ît. Assume that the surface is radially symmetric and it contacts the boundary of Ω with a prescribed angle Ξ=Ξ(t,u). In case Ξ tends to two (spatially or temporally) periodic functions as uâ±â, we show that the problem has a unique entire solution U, which propagates from ââ to â and connects two (spatially or temporally) periodic traveling waves at t=ââ and at t=â.
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