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arXiv math/0605533math.PR
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截断稳定过程的位势论

Potential Theory of Truncated Stable Processes

Panki Kim, Renming Song

摘要:

对于任意0 <alpha <2,截断对称α稳定过程是R ^d中的对称Levy过程,其Levy密度由c |x| ^{-d-alpha} 1_{|x| <1}给出,其中c为常数。本文详细研究了截断对称稳定过程的位势论。证明了非负调和非负函数的一个Harnack不等式.对于有界凸区域中关于这些过程调和的非负函数,我们也建立了边界Harnack原理。我们给出了一个例子,一个非凸区域的边界Harnack原则失败。

英文摘要:

For any 0 < alpha <2, a truncated symmetric alpha-stable process is a symmetric Levy process in R^d with a Levy density given by c|x|^{-d-alpha} 1_{|x|< 1} for some constant c. In this paper we study the potential theory of truncated symmetric stable processes in detail. We prove a Harnack inequality for nonnegative harmonic nonnegative functions these processes. We also establish a boundary Harnack principle for nonnegative functions which are harmonic with respect to these processes in bounded convex domains. We give an example of a non-convex domain for which the boundary Harnack principle fails.

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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