Hyperconvex spaces revisited

In this paper we describe a construction of a large class of hyperconvex metric spaces. In particular, this construction contains well-known examples of hyperconvex spaces such as ℝ2 with the “river” metric or with the radial one. Further, we investigate linear hyperconvex spaces with extremal point...

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Bibliographic Details
Published in:Bulletin of the Australian Mathematical Society 2003-10, Vol.68 (2), p.191-203
Main Authors: Borkowski, Marcin, Bugajewski, Dariusz, Przybycień, Hubert
Format: Article
Language:English
Subjects:
Metric space
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Summary:In this paper we describe a construction of a large class of hyperconvex metric spaces. In particular, this construction contains well-known examples of hyperconvex spaces such as ℝ2 with the “river” metric or with the radial one. Further, we investigate linear hyperconvex spaces with extremal points of their unit balls. We prove that only in the case of a plane (and obviously a line) is there a strict connection between the number of extremal points of the unit ball and the hyperconvexity of the space. Some additional properties concerning the notion of hyperconvexity are also investigated.
ISSN:0004-9727
1755-1633
DOI:10.1017/S0004972700037588