Title
Regular embeddings of Kn,n where n is an odd prime power
Abstract
We show that if n=p^e where p is an odd prime and e=1, then the complete bipartite graph K"n","n has p^e^-^1 regular embeddings in orientable surfaces. These maps, which are Cayley maps for cyclic and dihedral groups, have type {2n,n} and genus (n-1)(n-2)/2; one is reflexible, and the rest are chiral. The method involves groups which factorise as a product of two cyclic groups of order n. We deduce that if n is odd then K"n","n has at least n/@?"p"|"np orientable regular embeddings, and that this lower bound is attained if and only if no two primes p and q dividing n satisfy p=1mod(q).
Year
DOI
Venue
2007
10.1016/j.ejc.2005.07.021
Eur. J. Comb.
Keywords
Field
DocType
order n,dihedral group,regular embeddings,cyclic group,cayley map,np orientable regular embeddings,primes p,odd prime power,complete bipartite graph k,orientable surface,complete bipartite graph,satisfiability,lower bound
Prime (order theory),Discrete mathematics,Complete bipartite graph,Combinatorics,Cyclic group,Dihedral group,Upper and lower bounds,Prime power,Mathematics
Journal
Volume
Issue
ISSN
28
6
0195-6698
Citations 
PageRank 
References 
16
1.44
6
Authors
3
Name
Order
Citations
PageRank
Gareth A. Jones111623.18
Roman Nedela239247.78
Martin Škoviera342754.90