Sparse graphs with bounded induced cycle packing number have logarithmic treewidth
Sparse graphs with bounded induced cycle packing number have logarithmic treewidth
复制标题
具有有界诱导循环堆积数的稀疏图具有对数树宽
DOI:
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Alexandra Wesolek
中科院分区:
文献类型:
--
作者:
Marthe Bonamy;Édouard Bonnet;Hugues Déprés;Louis Esperet;Colin Geniet;Claire Hilaire;Stéphan Thomassé;Alexandra Wesolek
A graph is $mathcal{O}_k$-free if it does not contain $k$ pairwise vertex-disjoint and non-adjacent cycles. We prove that"sparse"(here, not containing large complete bipartite graphs as subgraphs) $mathcal{O}_k$-free graphs have treewidth (even, feedback vertex set number) at most logarithmic in the number of vertices. This is optimal, as there is an infinite family of $mathcal{O}_2$-free graphs without $K_{2,3}$ as a subgraph and whose treewidth is (at least) logarithmic. Using our result, we show that Maximum Independent Set and 3-Coloring in $mathcal{O}_k$-free graphs can be solved in quasi-polynomial time. Other consequences include that most of the central NP-complete problems (such as Maximum Independent Set, Minimum Vertex Cover, Minimum Dominating Set, Minimum Coloring) can be solved in polynomial time in sparse $mathcal{O}_k$-free graphs, and that deciding the $mathcal{O}_k$-freeness of sparse graphs is polynomial time solvable.
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DOI:
10.1016/j.jctb.2023.10.003
发表时间:
2024
期刊:
Journal of Combinatorial Theory, Series B
影响因子:
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作者:
Nguyen T
通讯作者:
Nguyen T
DOI:
10.48550/arxiv.1712.05010
发表时间:
2017
期刊:
arXiv e-prints
影响因子:
--
作者:
Bonnet
通讯作者:
Bonnet
影响因子:
2.5
作者:
Bonamy M
通讯作者:
Bonamy M
影响因子:
--
作者:
Chudnovsky, Maria;Abrishami, Tara;Hajebi, Sepehr;Spirkl, Sophie
通讯作者:
Spirkl, Sophie