{ "id": "2505.04118", "version": "v1", "published": "2025-05-07T04:26:05.000Z", "updated": "2025-05-07T04:26:05.000Z", "title": "Coarse Geometry of Free Products of Metric Spaces", "authors": [ "Qin Wang", "Jvbin Yao" ], "categories": [ "math.FA", "math.MG" ], "abstract": "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.", "revisions": [ { "version": "v1", "updated": "2025-05-07T04:26:05.000Z" } ], "analyses": { "keywords": [ "metric spaces", "free product", "coarse geometry", "study coarse geometric permanence properties", "uniformly convex banach space" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }