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arXiv 2302.13102math.DG
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类芬斯勒空间中的绝对连续曲线

Absolutely continuous curves in Finsler-like spaces

Fue Zhang, Wei Zhao

AI总结:

本文研究芬斯勒结构诱导的非对称度量空间及非光滑类芬斯勒空间中的绝对连续曲线,证明三类曲线的等价性,建立梯度流定理、Wasserstein空间的Lisini结构定理及与连续性方程的关系,并构造示例说明非对称与对称情形的本质差异。

摘要:

本文致力于研究由芬斯勒结构诱导的非对称度量空间中的绝对连续曲线。首先,针对芬斯勒流形诱导的非对称空间,我们证明了当定义域为有界闭区间时,三类不同的绝对连续曲线是重合的。作为应用,我们在芬斯勒框架下得到了梯度流的普适存在性与正则性定理。其次,我们研究了芬斯勒流形上Wasserstein空间中的绝对连续曲线,并在该框架下建立了Lisini结构定理,该定理通过集中在底芬斯勒流形绝对连续曲线上的动力传输计划,刻画了Wasserstein空间中绝对连续曲线的性质。此外,我们还发现了连续性方程与Wasserstein空间中绝对连续曲线之间的密切关系。最后但同样重要的是,我们还考虑了非光滑的“类芬斯勒”空间,在这种情况下,上述大多数结果仍然成立。本文构造了多种模型示例,指出了非对称与对称情形之间的本质差异。

英文摘要:

The present paper is devoted to the investigation of absolutely continuous curves in asymmetric metric spaces induced by Finsler structures. Firstly, for asymmetric spaces induced by Finsler manifolds, we show that three different kinds of absolutely continuous curves coincide when their domains are bounded closed intervals. As an application, a universal existence and regularity theorem for gradient flow is obtained in the Finsler setting. Secondly, we study absolutely continuous curves in Wasserstein spaces over Finsler manifolds and establish the Lisini structure theorem in this setting, which characterize the nature of absolutely continuous curves in Wasserstein spaces in terms of dynamical transference plans concentrated on absolutely continuous curves in base Finsler manifolds. Besides, a close relation between continuity equations and absolutely continuous curves in Wasserstein spaces is founded. Last but not least, we also consider nonsmooth ``Finlser-like" spaces, in which case most of the aforementioned results remain valid. Various model examples are constructed in this paper, which point out genuine differences between the asymmetric and symmetric settings.

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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