Title
Calculating genus polynomials via string operations and matrices.
Abstract
To calculate the genus polynomials for a recursively specifiable sequence of graphs, the set of cellular imbeddings in oriented surfaces for each of the graphs is usually partitioned into imbedding-types. The effects of a recursively applied graph operation tau on each imbedding-type are represented by a production matrix. When the operation tau amounts to constructing the next member of the sequence by attaching a copy of a fixed graph H to the previous member, Stahl called the resulting sequence of graphs an H -linear family. We demonstrate herein how representing the imbedding types by strings and the operation tau by string operations enables us to automate the calculation of the production matrices, a task requiring time proportional to the square of the number of imbedding-types.
Year
DOI
Venue
2018
10.26493/1855-3974.939.77d
ARS MATHEMATICA CONTEMPORANEA
Keywords
Field
DocType
Graph imbedding,genus polynomial,production matrix,transfer matrix method
Graph,Combinatorics,Polynomial,Matrix (mathematics),Mathematics,Recursion,String operations
Journal
Volume
Issue
ISSN
15
2
1855-3966
Citations 
PageRank 
References 
1
0.35
7
Authors
4
Name
Order
Citations
PageRank
Jonathan L. Gross1458268.73
Imran F. Khan2364.37
Toufik Mansour342387.76
Thomas W. Tucker4191130.07