Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8903117 | Discrete Mathematics | 2018 | 12 Pages |
Abstract
The graph of overlapping permutations is a directed graph that is an analogue to the De Bruijn graph. It consists of vertices that are permutations of length n and edges that are permutations of length n+1 in which an edge a1â¯an+1 would connect the standardization of a1â¯an to the standardization of a2â¯an+1. We examine properties of this graph to determine where directed cycles can exist, to count the number of directed 2-cycles within the graph, and to enumerate the vertices that are contained within closed walks and directed cycles of more general lengths.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics
Authors
John Asplund, N. Bradley Fox,