Title
Isomorphism criterion for monomial graphs
Abstract
Let q be a prime power, 𝔽q be the field of q elements, and k, m be positive integers. A bipartite graph G = Gq(k, m) is defined as follows. The vertex set of G is a union of two copies P and L of two-dimensional vector spaces over 𝔽q, with two vertices (p1, p2) ∈ P and [ l1, l2] ∈ L being adjacent if and only if p2 + l2 = p 1kl 1m. We prove that graphs Gq(k, m) and Gq′(k′, m′) are isomorphic if and only if q = q′ and {gcd (k, q - 1), gcd (m, q - 1)} = {gcd (k′, q - 1),gcd (m′, q - 1)} as multisets. The proof is based on counting the number of complete bipartite INFgraphs in the graphs. © 2005 Wiley Periodicals, Inc. J Graph Theory 48: 322–328, 2005
Year
DOI
Venue
2005
10.1002/jgt.v48:4
Journal of Graph Theory
Keywords
Field
DocType
bipartite graph,vector space,graph isomorphism
Complete bipartite graph,Topology,Discrete mathematics,Combinatorics,Vertex-transitive graph,Robertson–Seymour theorem,Forbidden graph characterization,Graph isomorphism,Cograph,Mathematics,Pancyclic graph,Triangle-free graph
Journal
Volume
Issue
ISSN
48
4
0364-9024
Citations 
PageRank 
References 
3
0.54
6
Authors
3
Name
Order
Citations
PageRank
Vasyl Dmytrenko1141.99
Felix Lazebnik235349.26
Raymond Viglione3282.61