Abstract
A metric transform of a semimetric space X is obtained from X by measuring the distances by a different (not always proportional) scale. Two semimetric spaces are said to be isomorphic if one is isometric to a metric transform of the other. If X is a finite semimetric space, then it will be shown that X is isomorphic to a subset of a euclidean space. The dimension of X is defined to be the minimum dimension of a euclidean space containing an isomorph of X. In this paper we examine scales and dimensions for finite semimetric spaces, especially, for connected graphs and trees as metric spaces. We also count the number of non-isomorphic semimetric spaces.
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