Title
Six signed Petersen graphs, and their automorphisms
Abstract
Up to switching isomorphism, there are six ways to put signs on the edges of the Petersen graph. We prove this by computing switching invariants, especially frustration indices and frustration numbers, switching automorphism groups, chromatic numbers, and numbers of proper 1-colorations, thereby illustrating some of the ideas and methods of signed graph theory. We also calculate automorphism groups and clusterability indices, which are not invariant under switching. In the process, we develop new properties of signed graphs, especially of their switching automorphism groups.
Year
DOI
Venue
2012
10.1016/j.disc.2011.12.010
Discrete Mathematics
Keywords
Field
DocType
switching automorphism,proper graph coloring,petersen graph,frustration,clusterability,balance,switching,signed graph
Graph automorphism,Discrete mathematics,Combinatorics,Vertex-transitive graph,Edge-transitive graph,Signed graph,Generalized Petersen graph,Petersen family,Symmetric graph,Petersen graph,Mathematics
Journal
Volume
Issue
ISSN
312
9
Discrete Mathematics 312 (2012), no. 9, 1558-1583
Citations 
PageRank 
References 
0
0.34
5
Authors
1
Name
Order
Citations
PageRank
T. Zaslavsky129756.67