Title
Componentwise Complementary Cycles in Almost Regular 3-Partite Tournaments
Abstract
The vertex set of a digraph D is denoted by V(D). A c-partite tournament is an orientation of a complete c-partite graph. Let V 1,V 2,...,V c be the partite sets of D. If there exist two vertex disjoint cycles C and C驴 in D such that V i 驴 (V(C) 驴 V(C驴)) 驴 驴 for all i = 1,2,..., c, then D is cycle componentwise complementary. The global irregularity of D is defined by $i_{\mathrm{g}}(D)=\max\{\max(d^{+}(x),d^{-}(x))-\min(d^{+}(y),d^{-}(y))|x,y\in V(D)\}$ over all vertices x and y of D (x = y is admissible), where d + (x) and d 驴(x) are the outdegree and indegree of x, respectively. If i g(D) ≤ 1, then D is almost regular. In this paper, we consider a special kind of multipartite tournaments which are almost regular 3-partite tournaments, and we show that each almost regular 3-partite tournament D is cycle componentwise complementary, unless D is isomorphic to D 3,2.
Year
DOI
Venue
2007
10.1007/978-3-540-72588-6_57
International Conference on Computational Science (3)
Keywords
Field
DocType
tournament
Discrete mathematics,Graph,Combinatorics,Tournament,Multipartite,Disjoint sets,Vertex (geometry),Isomorphism,Mathematics,Digraph
Conference
Volume
Issue
ISSN
4489 LNCS
PART 3
0302-9743
Citations 
PageRank 
References 
0
0.34
7
Authors
4
Name
Order
Citations
PageRank
Zhihong He1304.12
Guojun Li227037.39
Dawei Ding310015.43
Quanhui Liu4243.16