Sewing lemma and knitting lemma for metric spaces

Fuente: arXiv
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Main Authors: Curry, Charles H. A., Manchon, Dominique
Format: Preprint
Published: 2025
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author Curry, Charles H. A.
Manchon, Dominique
author_facet Curry, Charles H. A.
Manchon, Dominique
contents We state and prove a sewing lemma in the general context of families of complete metric spaces indexed by an interval of the real line, encompassing the flow sewing lemma proved by I. Bailleul in 2015. A further generalisation to other metric parameter spaces P than intervals is moreover proposed, leading to a representation of the groupoid of thin-equivalent Lipschitz paths on P . Under a stronger hypothesis, we finally prove a two-dimensional version, the knitting lemma, which gives rise to a representation of the Lipschitz homotopy groupoid of the parameter space, without thinness condition.
format Preprint
id arxiv_https___arxiv_org_abs_2512_05312
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Sewing lemma and knitting lemma for metric spaces
Curry, Charles H. A.
Manchon, Dominique
Classical Analysis and ODEs
Category Theory
18B40, 20L05, 41A99
We state and prove a sewing lemma in the general context of families of complete metric spaces indexed by an interval of the real line, encompassing the flow sewing lemma proved by I. Bailleul in 2015. A further generalisation to other metric parameter spaces P than intervals is moreover proposed, leading to a representation of the groupoid of thin-equivalent Lipschitz paths on P . Under a stronger hypothesis, we finally prove a two-dimensional version, the knitting lemma, which gives rise to a representation of the Lipschitz homotopy groupoid of the parameter space, without thinness condition.
title Sewing lemma and knitting lemma for metric spaces
topic Classical Analysis and ODEs
Category Theory
18B40, 20L05, 41A99
url https://arxiv.org/abs/2512.05312