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arXiv 1102.5774math.APmath.PR
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抛物比较的再讨论及其应用

Parabolic comparison revisited and applications

Joscha Diehl, Peter K. Friz, Harald Oberhauser

摘要:

本文考虑粘性意义下的Cauchy-狄利克雷问题$\partial_t u - F(t,x,u,Du,D^2 u) = 0 on (0,T)\times \R^n$.在用户指南的结构假设(3.14)加上$F$上的温和条件(例如处理无界域)下,建立了有界半连续(次/超)解的比较。讨论了$(0,T]$、时空正则性和存在性的比较。我们的分析通过延长抛物定理的总和似乎是有用的本身。

英文摘要:

We consider the Cauchy-Dirichlet problem $\partial_t u - F(t,x,u,Du,D^2 u) = 0 on (0,T)\times \R^n$ in viscosity sense. Comparison is established for bounded semi-continuous (sub-/super-)solutions under structural assumption (3.14) of the User's Guide plus a mild condition on $F$ such as to cope with the unbounded domain. Comparison on $(0,T]$, space-time regularity and existence are also discussed. Our analysis passes through an extension of the parabolic theorem of sums which appears to be useful in its own right.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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