Coarse Geometry of Free Products of Metric Spaces

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Hauptverfasser: Wang, Qin, Yao, Jvbin
Format: Preprint
Veröffentlicht: 2025
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author Wang, Qin
Yao, Jvbin
author_facet Wang, Qin
Yao, Jvbin
contents Recently, a notion of the free product $X \ast Y$ of two metric spaces $X$ and $Y$ has been introduced by T. Fukaya and T. Matsuka. In this paper, we study coarse geometric permanence properties of the free product $X \ast Y$. We show that if $X$ and $Y$ satisfy any of the following conditions, then $X \ast Y$ also satisfies that condition: (1) they are coarsely embeddable into a Hilbert space or a uniformly convex Banach space; (2) they have Yu's Property A; (3) they are hyperbolic spaces. These generalize the corresponding results for discrete groups to the case of metric spaces.
format Preprint
id arxiv_https___arxiv_org_abs_2505_04118
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Coarse Geometry of Free Products of Metric Spaces
Wang, Qin
Yao, Jvbin
Functional Analysis
Metric Geometry
Recently, a notion of the free product $X \ast Y$ of two metric spaces $X$ and $Y$ has been introduced by T. Fukaya and T. Matsuka. In this paper, we study coarse geometric permanence properties of the free product $X \ast Y$. We show that if $X$ and $Y$ satisfy any of the following conditions, then $X \ast Y$ also satisfies that condition: (1) they are coarsely embeddable into a Hilbert space or a uniformly convex Banach space; (2) they have Yu's Property A; (3) they are hyperbolic spaces. These generalize the corresponding results for discrete groups to the case of metric spaces.
title Coarse Geometry of Free Products of Metric Spaces
topic Functional Analysis
Metric Geometry
url https://arxiv.org/abs/2505.04118