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arXiv 2203.05946math.PRmath.CAmath.RA
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受控粗糙路径的几何学

The geometry of controlled rough paths

Mazyar Ghani Varzaneh, Sebastian Riedel, Alexander Schmeding, Nikolas Tapia

AI总结:

本文证明任意阶受控(分支)粗糙路径空间构成连续 Banach 空间场,建立内蕴拓扑与逼近结果,并使粗糙积分及 Itô-Lyons 映射连续且保持结构。

摘要:

我们证明,任意阶的受控(分支)粗糙路径空间构成一个连续的 Banach 空间场。该结构与(无限维)向量丛有许多相似之处,并允许在全空间(即所有受控路径空间的集合)上定义一种拓扑;在几何情形下,该拓扑被证明是 Polish 的。该构造是内蕴的,并基于一个关于受控粗糙路径的新逼近结果。此框架将粗糙积分映射和 Itô-Lyons 映射等著名映射转化为连续的(保持结构的)映射。此外,它与粗糙积分稳定性理论中以往受关注的构造相容。

英文摘要:

We prove that the spaces of controlled (branched) rough paths of arbitrary order form a continuous field of Banach spaces. This structure has many similarities to an (infinite-dimensional) vector bundle and allows to define a topology on the total space, the collection of all controlled path spaces, which turns out to be Polish in the geometric case. The construction is intrinsic and based on a new approximation result for controlled rough paths. This framework turns well-known maps such as the rough integration map and the Itô-Lyons map into continuous (structure preserving) mappings. Moreover, it is compatible with previous constructions of interest in the stability theory for rough integration.

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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