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Turkish Journal of Mathematics

DOI

10.3906/mat-1506-36

Abstract

The investigation of metric trees began with J. Tits in 1977. Recently we studied a more general notion of quasi-metric tree. In the current article we prove, among other facts, that the $q$-hyperconvex hull of a $q$-hyperconvex $T_0$-quasi-metric tree is itself a $T_0$-quasi-metric tree. This is achieved without using the four-point property, a geometric concept used by Aksoy and Maurizi to show that every complete metric tree is hyperconvex.

Keywords

Metric interval, metric tree, $T_0$-quasi-metric, quasi-metric interval, quasi-metric tree

First Page

122

Last Page

131

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