The geometry of controlled rough paths

Fuente: arXiv
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Hauptverfasser: Varzaneh, Mazyar Ghani, Riedel, Sebastian, Schmeding, Alexander, Tapia, Nikolas
Format: Preprint
Veröffentlicht: 2022
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author Varzaneh, Mazyar Ghani
Riedel, Sebastian
Schmeding, Alexander
Tapia, Nikolas
author_facet Varzaneh, Mazyar Ghani
Riedel, Sebastian
Schmeding, Alexander
Tapia, Nikolas
contents 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.
format Preprint
id arxiv_https___arxiv_org_abs_2203_05946
institution arXiv
publishDate 2022
record_format arxiv
spellingShingle The geometry of controlled rough paths
Varzaneh, Mazyar Ghani
Riedel, Sebastian
Schmeding, Alexander
Tapia, Nikolas
Probability
Classical Analysis and ODEs
Rings and Algebras
34K50 (Primary), 37H10, 37H15, 60H99, 60G15 (Secondary)
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.
title The geometry of controlled rough paths
topic Probability
Classical Analysis and ODEs
Rings and Algebras
34K50 (Primary), 37H10, 37H15, 60H99, 60G15 (Secondary)
url https://arxiv.org/abs/2203.05946