Title
The Power Index of a Graph.
Abstract
The power index \(\Theta (\Gamma )\) of a graph \(\Gamma \) is the least order of a group G such that \(\Gamma \) can embed into the power graph of G. Furthermore, this group G is \(\Gamma \) -optimal if G has order \(\Theta (\Gamma )\). We say that \(\Gamma \) is power-critical if its order is equal to \(\Theta (\Gamma )\). This paper focuses on the power indices of complete graphs, complete bipartite graphs and 1-factors. We classify all power-critical graphs \(\Gamma '\) in these three families, and give a necessary and sufficient condition for \(\Gamma '\)-optimal groups.
Year
DOI
Venue
2017
10.1007/s00373-017-1851-y
Graphs and Combinatorics
Keywords
Field
DocType
Power graph, Embedding, Power index, Power-critical graph, 05C25
Discrete mathematics,Graph,Combinatorics,Bipartite graph,Order (group theory),Mathematics
Journal
Volume
Issue
ISSN
33
5
0911-0119
Citations 
PageRank 
References 
1
0.36
8
Authors
3
Name
Order
Citations
PageRank
Xuanlong Ma1133.42
Min Feng241.96
Kaishun Wang322739.82