Title
A Characterization of Graphs Where the Independence Number Equals the Radius
Abstract
In a classical 1986 paper by Erdös, Saks and Saós every graph of radius r has an induced path of order at least 2r − 1. This result implies that the independence number of such graphs is at least r. In this paper, we use a result of S. Fajtlowicz about radius-critical graphs to characterize graphs where the independence number is equal to the radius, for all possible values of the radius except 2, 3, and 4. We briefly discuss these remaining cases as well.
Year
DOI
Venue
2012
10.1007/s00373-011-1054-x
Graphs and Combinatorics
Keywords
Field
DocType
s. fajtlowicz,independence number,radius r,ciliate · bipartite number · forest number · independence number · path number · radius · scaffold · tree number,remaining case,induced path,radius-critical graph,possible value
Topology,Discrete mathematics,Graph,Indifference graph,Combinatorics,Independence number,Induced path,Chordal graph,Mathematics
Journal
Volume
Issue
ISSN
28
3
1435-5914
Citations 
PageRank 
References 
0
0.34
3
Authors
4
Name
Order
Citations
PageRank
Ermelinda Delavina1234.51
Craig E. Larson2154.55
ryan pepper3406.80
Bill Waller482.54