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arXiv 1004.4418math.AP
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具有齐次Dirichlet边界条件的无穷heat equation方程的精化渐近性

Refined asymptotics for the infinite heat equation with homogeneous Dirichlet boundary conditions

Philippe Laurencot, Christian Stinner

摘要:

证明了具有齐次Dirichlet边界条件的无穷热方程的非负黏性解在适当的时间尺度变换后,随着时间的增加收敛到无穷大唯一确定的极限.证明依赖于半松弛极限技术以及内部正估计和边界估计。对支撑的扩展也进行了研究。

英文摘要:

The nonnegative viscosity solutions to the infinite heat equation with homogeneous Dirichlet boundary conditions are shown to converge as time increases to infinity to a uniquely determined limit after a suitable time rescaling. The proof relies on the half-relaxed limits technique as well as interior positivity estimates and boundary estimates. The expansion of the support is also studied.

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