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	Enumerating typical abelian prime-fold coverings of a circulant graph
	Feng, Rongquan ; Kwak, Jin Ho ; Kwon, Young Soo
	2009
关键词	Graph covering Enumeration Voltage assignment Circulant graph ISOMORPHISM-CLASSES PROJECTIONS
英文摘要	Enumerating the isomorphism classes of several types of graph coverings is one of the central research topics in enumerative topological graph theory (see [R. Feng, J.H. Kwak, J. Kim, J. Lee, Isomorphism classes of concrete graph coverings, SIAM J. Discrete Math. 11 (1998) 265-272; R. Feng, J.H. Kwak, Typical circulant double coverings of a circulant graph, Discrete Math. 277 (2004) 73-85; R. Feng,J.H. Kwak, Y.S. Kwon, Enumerating typical circulant covering projections onto a circulant graph, SIAM J. Discrete Math. 19 (2005) 196-207; SIAM J. Discrete Math. 21 (2007) 548-550 (erratum); M. Hofmeister, Graph covering projections arising from finite vector spaces over finite fields, Discrete Math. 143 (1995) 87-97; M. Hofmeister, Enumeration of concrete regular covering projections, SIAM J. Discrete Math. 8 (1995) 51-61; M. Hofmeister, A note on counting connected graph covering projections, SIAM J. Discrete Math. 11 (1998) 286-292; J.H. Kwak, J. Chun, J. Lee, Enumeration of regular graph coverings having finite abelian covering transformation groups, SIAM J. Discrete Math. 11 (1998) 273-285; J.H. Kwak, J. Lee, Isomorphism classes of graph bundles, Canad. J. Math. XLlI (1990) 747-761]). A covering is called abelian (or circulant, respectively) if its covering graph is a Cayley graph on an abelian (or a cyclic, respectively) group. A covering p from a Cayley graph Cay(A, X) onto another Cay (Q, Y) is called typical if the map p : A -> Q on the vertex sets is a group epimorphism. Recently, the isomorphism classes of connected typical circulant r-fold coverings of a circulant graph are enumerated in [R. Feng, J.H. Kwak, Typical circulant double coverings of a circulant graph, Discrete Math. 277 (2004) 73-85] for r = 2 and in [R. Feng, J.H. Kwak, Y.S. Kwon, Enumerating typical circulant covering projections onto a circulant graph, SIAM J. Discrete Math. 19 (2005) 196-207; SIAM J. Discrete Math. 21 (2007) 548-550 (erratum)] for any r. As a continuation of these works, we enumerate in this paper the isomorphism classes of typical abelian prime-fold coverings of a circulant graph. (C) 2008 Elsevier B.V. All rights reserved.; Mathematics; SCI(E); EI; 2; ARTICLE; 8; 2174-2179; 309
语种	英语
出处	EI ; SCI
出版者	离散数学
内容类型	其他
源URL	[http://hdl.handle.net/20.500.11897/157725]
专题	数学科学学院
推荐引用方式 GB/T 7714	Feng, Rongquan,Kwak, Jin Ho,Kwon, Young Soo. Enumerating typical abelian prime-fold coverings of a circulant graph. 2009-01-01.

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