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arXiv 2104.06158math.PRmath.AP
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基于正则结构的Sobolev粗路扩张定理

A Sobolev rough path extension theorem via regularity structures

Chong Liu, David J. Prömel, Josef Teichmann

摘要:

证明了在$α< 1/p<1/3$的条件下,任何具有正则性$α$和可积性$p$的$\mathbb{R}^d$值Sobolev路都可以提升为Sobolev粗路.我们的方法的新颖之处是它使用的想法背后的海尔的重建定理推广到一个框架,允许Sobolev模型和Sobolev建模分布。此外,我们证明了相应的提升映射是局部Lipschitz连续的非齐次Sobolev度量。

英文摘要:

We show that every $\mathbb{R}^d$-valued Sobolev path with regularity $α$ and integrability $p$ can be lifted to a Sobolev rough path provided $α< 1/p<1/3$. The novelty of our approach is its use of ideas underlying Hairer's reconstruction theorem generalized to a framework allowing for Sobolev models and Sobolev modelled distributions. Moreover, we show that the corresponding lifting map is locally Lipschitz continuous with respect to the inhomogeneous Sobolev metric.

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