arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.0797math.FA
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度量空间上有界变差函数的扩张与迹

Extensions and traces of functions of bounded variation on metric spaces

Panu Lahti

摘要:

在具有加倍测度和Poincaré不等式的度量空间中,基于Björn和Shanmugalingam(2007)的结果,证明了有界变差函数可以从任何有界一致区域扩展到整个空间.与扩张密切相关的是边界迹的概念,Hakkarainen et al.(2014)以前已经研究过。在有限周长集满足适当局部性条件的空间上,我们建立了有界变差函数迹的一些基本结果。我们的分析轨迹也产生了新的结果的有界变差函数在其跳跃集的行为。

英文摘要:

In the setting of a metric space equipped with a doubling measure and supporting a Poincaré inequality, and based on results by Björn and Shanmugalingam (2007), we show that functions of bounded variation can be extended from any bounded uniform domain to the whole space. Closely related to extensions is the concept of boundary traces, which have previously been studied by Hakkarainen et al. (2014). On spaces that satisfy a suitable locality condition for sets of finite perimeter, we establish some basic results for the traces of functions of bounded variation. Our analysis of traces also produces novel results on the behavior of functions of bounded variation in their jump sets.

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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