Title
Perfect codes in circulant graphs.
Abstract
A perfect code in a graph =(V,E) is a subset C of V that is an independent set such that every vertex in VC is adjacent to exactly one vertex in C. A total perfect code in is a subset C of V such that every vertex of V is adjacent to exactly one vertex in C. A perfect code in the Hamming graph H(n,q) agrees with a q-ary perfect 1-code of length n in the classical setting. In this paper we give a necessary and sufficient condition for a circulant graph of degree p1 to admit a perfect code, where p is an odd prime. We also obtain a necessary and sufficient condition for a circulant graph of order n and degree pl1 to have a perfect code, where p is a prime and pl the largest power of p dividing n. Similar results for total perfect codes are also obtained in the paper.
Year
DOI
Venue
2017
10.1016/j.disc.2017.02.007
Discrete Mathematics
Keywords
Field
DocType
Perfect code,Total perfect code,Efficient dominating set,Efficient open dominating set,Cayley graph,Circulant graph
Perfect graph,Discrete mathematics,Combinatorics,Circulant graph,Vertex (graph theory),Perfect power,Neighbourhood (graph theory),Regular graph,Trivially perfect graph,Mathematics,Perfect graph theorem
Journal
Volume
Issue
ISSN
340
7
Discrete Mathematics 340 (2017) 1522-1527
Citations 
PageRank 
References 
4
0.45
12
Authors
3
Name
Order
Citations
PageRank
Rongquan Feng111725.64
He Huang27918.92
Sanming Zhou38012.48