Decomposition of class II graphs into two class I graphs
Decomposition of class II graphs into two class I graphs
复制标题
将 II 类图分解为两个 I 类图
DOI:
10.1016/j.disc.2023.113610
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发表时间:
2023
影响因子:
0.8
通讯作者:
Zhao, Yue
中科院分区:
文献类型:
--
作者:
Cao, Yan;Jing, Guangming;Luo, Rong;Mkrtchyan, Vahan;Zhang, Cun-Quan;Zhao, Yue
Abstract Mkrtchyan and Steffen (2012)[3] showed that every class II simple graph can be decomposed into a maximum Δ-edge-colorable subgraph and a matching. They further conjectured that every graph G with chromatic index Δ (G)+ k (k≥ 1) can be decomposed into a maximum Δ (G)-edge-colorable subgraph (not necessarily class I) and a k-edge-colorable subgraph. In this paper, we first generalize their result to multigraphs and show that every multigraph G with multiplicity μ can be decomposed into a maximum Δ (G)-edge-colorable subgraph and a subgraph with maximum degree at most μ. Then we prove that every graph G with chromatic index Δ (G)+ k can be decomposed into two class I subgraphs H 1 and H 2 such that Δ (H 1)= Δ (G) and Δ (H 2)= k, which is a variation of their conjecture.
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影响因子:
0.9
作者:
V. Mkrtchyan;E. Steffen
通讯作者:
E. Steffen
DOI:
10.1016/j.disc.2010.02.007
发表时间:
2008
期刊:
Discret. Math.
影响因子:
--
作者:
V. Mkrtchyan;S. S. Petrosyan;Gagik N. Vardanyan
通讯作者:
Gagik N. Vardanyan
DOI:
10.1016/j.disc.2008.11.017
发表时间:
2009
期刊:
Discret. Math.
影响因子:
--
作者:
Romeo Rizzi
通讯作者:
Romeo Rizzi
影响因子:
0.8
作者:
Albertson, MO;Haas, R
通讯作者:
Haas, R