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arXiv 1911.00533math.MGmath.APmath.FA
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Newton-Sobolev、Hajlasz-Sobolev和BV函数在度量空间上的迹

Traces of Newton-Sobolev, Hajlasz-Sobolev and BV functions on metric spaces

Panu Lahti, Xining Li, Zhuang Wang

摘要:

我们研究了Newton-Sobolev,Hajlasz-Sobolev和BV(有界变差)函数的边界迹。假设域的规则性比通常在文献中做的,我们表明,所有这些功能类实现相同的“边界值”,这特别意味着迹空间一致,只要它们存在。我们的许多结果似乎是新的,即使在欧几里得空间,但我们工作在一个更一般的完全度量空间配备了一个加倍措施和支持庞加莱不等式。

英文摘要:

We study the boundary traces of Newton-Sobolev, Hajlasz-Sobolev, and BV (bounded variation) functions. Assuming less regularity of the domain than is usually done in the literature, we show that all of these function classes achieve the same "boundary values", which in particular implies that the trace spaces coincide provided that they exist. Many of our results seem to be new even in Euclidean spaces but we work in a more general complete metric space equipped with a doubling measure and supporting a Poincare inequality.

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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