Distance-hereditary graphs |
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Institution: | Fachbereich Mathematik, Universität Oldenburg, Postfach 25 03, D-2900 Oldenburg, West Germany;Vakgroep Algemene Vorming, Faculteit W & N, Vrije Universiteit, Postbus 7161, NL-1007 MC Amsterdam The Netherlands |
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Abstract: | Distance-hereditary graphs (sensu Howorka) are connected graphs in which all induced paths are isometric. Examples of such graphs are provided by complete multipartite graphs and ptolemaic graphs. Every finite distance-hereditary graph is obtained from K1 by iterating the following two operations: adding pendant vertices and splitting vertices. Moreover, distance-hereditary graphs are characterized in terms of the distance function d, or via forbidden isometric subgraphs. |
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