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AbstractIf a function d is metric, a well-known result is that d/(1 + d) is also metric. We consider m-ary analogs of the binary notion of semimetric, called hemi-metrics and super-metrics. The metrics are totally symmetric maps from X m+1 into R ≥0 . It is shown that, if d is supermetric, then d/(1 + d) is also super-metric.Mathematics Subject Classification: 51Fxx, 54E35