Title
Long cycles and paths in distance graphs
Abstract
For n@?N and D@?N, the distance graph P\"n^D has vertex set {0,1,...,n-1} and edge set {ij|0@?i,j@?n-1,|j-i|@?D}. Note that the important and very well-studied circulant graphs coincide with the regular distance graphs. A fundamental result concerning circulant graphs is that for these graphs, a simple greatest common divisor condition, their connectivity, and the existence of a Hamiltonian cycle are all equivalent. Our main result suitably extends this equivalence to distance graphs. We prove that for a finite set D of order at least 2, there is a constant c\"D such that the greatest common divisor of the integers in D is 1 if and only if for every n, P\"n^D has a component of order at least n-c\"D if and only if for every n=c\"D+3, P\"n^D has a cycle of order at least n-c\"D. Furthermore, we discuss some consequences and variants of this result.
Year
DOI
Venue
2010
10.1016/j.disc.2010.07.020
Discrete Mathematics
Keywords
Field
DocType
circulant graph,we discuss some consequences and variants of this result. keywords. circulant graph,distance graph,hamilto- nian path,hamiltonian path,hamiltonian cycle,connectivity,graph connectivity,greatest common divisor
Discrete mathematics,Combinatorics,Circulant graph,Hamiltonian path,Vertex (graph theory),Chordal graph,Cycle graph,Circulant matrix,Regular graph,Greatest common divisor,Mathematics
Journal
Volume
Issue
ISSN
310
23
Discrete Mathematics
Citations 
PageRank 
References 
4
0.49
28
Authors
3
Name
Order
Citations
PageRank
Lucia Draque Penso119620.46
Dieter Rautenbach2946138.87
Jayme Luiz Szwarcfiter361895.79