Article ID Journal Published Year Pages File Type
4655951 Journal of Combinatorial Theory, Series A 2009 11 Pages PDF
Abstract

We consider an infinite graph G whose vertex set is the set of natural numbers and adjacency depends solely on the difference between vertices. We study the largest cardinality of a set of permutations of [n] any pair of which differ somewhere in a pair of adjacent vertices of G and determine it completely in an interesting special case. We give estimates for other cases and compare the results in case of complementary graphs. We also explore the close relationship between our problem and the concept of Shannon capacity “within a given type.”

Related Topics
Physical Sciences and Engineering Mathematics Discrete Mathematics and Combinatorics