The average distance p(G) of a graph G is the average among the distances between all pairs of vertices in G. For n 2 2, the average Steiner n-distance ,4G) of a connected graph G is the average Steiner distance over all sets of n vertices in G. It is shown that for a connected weighted graph G, pu,
A characterization of 3-Steiner distance hereditary graphs
β 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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β¦ Synopsis
Let G be a connected graph and S β 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.
π SIMILAR VOLUMES
A distance-hereditary graph is a connected graph in which every induced path is isometric, i.e., the distance of any two vertices in an induced path equals their distance in the graph. We present a linear time labeling algorithm for the minimum cardinality connected r-dominating set and Steiner tree
## 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__β__y__| β __D__. This study investigates the circular chromatic number and the fractional chromatic number of distance gra