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A characterization of 3-Steiner distance hereditary graphs

✍ Scribed by Day, D. P.; Oellermann, Ortrud R.; Swart, Henda C.


Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
174 KB
Volume
30
Category
Article
ISSN
0028-3045

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✦ Synopsis


Let G be a connected graph and S βŠ† V (G). Then, the Steiner distance of S in G, denoted by d G (S), is the smallest number of edges in a connected subgraph of G that contains

. Some general properties about the cycle structure of k-Steiner distance hereditary graphs are established. These are then used to characterize 3-Steiner distance hereditary graphs.


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## Abstract Suppose __D__ is a subset of __R__^+^. The distance graph __G__(__R, D__) is the graph with vertex set __R__ in which two vertices __x__,__y__ are adjacent if |__x__βˆ’__y__| ∈ __D__. This study investigates the circular chromatic number and the fractional chromatic number of distance gra