The Linear 2-Arboricity of Planar Graphs
The Linear 2-Arboricity of Planar Graphs
复制标题
DOI:
10.1007/s00373-002-0504-x
复制
发表时间:
2003-06
影响因子:
0.7
通讯作者:
Ko-Wei Lih;Li-Da Tong;Weifan Wang
中科院分区:
文献类型:
--
作者:
Ko-Wei Lih;Li-Da Tong;Weifan Wang
LetGbe a planar graph with maximum degree Δ and girthg. The linear 2-arboricityla2(G) ofGis the least integerksuch thatGcan be partitioned intokedge-disjoint forests, whose component trees are paths of length at most 2. We prove that (1)la2(G)≤⌈(Δ+1)/2⌉+12; (2)la2(G)≤⌈(Δ+1)/2⌉+6 ifg≥4; (3)la2(G)≤⌈(Δ+1)/2⌉+2 ifg≥5; (4)la2(G)≤⌈(Δ+1)/2⌉+1 ifg≥7.