The injective hull of ultra-quasi-metric versus q-hyperconvex hull of quasi-metric space
Otafudu, Olivier Olela
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For any partially ordered set equipped with its natural T0-quasi-metric (T0-ultra-quasi-metric), we study the connection between the ultra-quasi-metrically injective hull and the q-hyperconvex hull. We also observe that for a partially ordered set, its Dedekind-MacNeille completion coincides exactly with the ultra-quasi-metric injective hull of its natural T0-ultra-quasi metric.