Title
Mod (2p + 1) -orientations in line graphs
Abstract
Jaeger in 1984 conjectured that every (4p)-edge-connected graph has a mod (2p+1)-orientation. It has also been conjectured that every (4p+1)-edge- connected graph is mod (2p+1)-contractible. In [Z.-H. Chen, H.-J. Lai, H. Lai, Nowhere zero flows in line graphs, Discrete Math. 230 (2001) 133-141], it has been proved that if G has a nowhere-zero 3-flow and the minimum degree of G is at least 4, then L(G) also has a nowhere-zero 3-flow. In this paper, we prove that the above conjectures on line graphs would imply the truth of the conjectures in general, and we also prove that if G has a mod (2p+1)-orientation and δ(G)≥4p, then L(G) also has a mod (2p+1)-orientation, which extends a result in Chen et al. (2001) [2]. © 2011 Elsevier B.V. All rights reserved.
Year
DOI
Venue
2011
10.1016/j.ipl.2011.09.005
Information Processing Letters
Keywords
Field
DocType
Combinatorial problems,Line graph,Mod (2 p + 1) -orientation,Mod (2 p + 1)-contractible,Nowhere zero flows
Graph,Discrete mathematics,Combinatorics,Mod,Line graph,Mathematics
Journal
Volume
Issue
ISSN
111
23-24
null
Citations 
PageRank 
References 
0
0.34
2
Authors
5
Name
Order
Citations
PageRank
Hong-Jian Lai163197.39
Hao Li200.34
Ping Li3217.14
Yanting Liang4225.81
Senmei Yao562.35