On the structure of noncollapsed Ricci flow limit spaces

Fuente: arXiv
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Main Authors: Fang, Hanbing, Li, Yu
Format: Preprint
Published: 2025
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author Fang, Hanbing
Li, Yu
author_facet Fang, Hanbing
Li, Yu
contents We establish a weak compactness theorem for the moduli space of closed Ricci flows with uniformly bounded entropy, each equipped with a natural spacetime distance, under pointed Gromov-Hausdorff convergence. Furthermore, we develop a structure theory for the corresponding Ricci flow limit spaces, showing that the regular part, where convergence is smooth, admits the structure of a Ricci flow spacetime, while the singular set has codimension at least four.
format Preprint
id arxiv_https___arxiv_org_abs_2510_12398
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On the structure of noncollapsed Ricci flow limit spaces
Fang, Hanbing
Li, Yu
Differential Geometry
We establish a weak compactness theorem for the moduli space of closed Ricci flows with uniformly bounded entropy, each equipped with a natural spacetime distance, under pointed Gromov-Hausdorff convergence. Furthermore, we develop a structure theory for the corresponding Ricci flow limit spaces, showing that the regular part, where convergence is smooth, admits the structure of a Ricci flow spacetime, while the singular set has codimension at least four.
title On the structure of noncollapsed Ricci flow limit spaces
topic Differential Geometry
url https://arxiv.org/abs/2510.12398