[HTML][HTML] A note of vertex arboricity of planar graphs without 4-cycles intersecting with 6-cycles

X Cui, W Teng, X Liu, H Wang - Theoretical Computer Science, 2020 - Elsevier
The vertex arboricity va (G) of G is the smallest integer k which the acyclic partition of V (G)
make the vertex set V (G) be partitioned into k subsets which each subset induces an acyclic …

Cover and variable degeneracy

F Lu, Q Wang, T Wang - Discrete Mathematics, 2022 - Elsevier
Let f be a nonnegative integer valued function on the vertex set of a graph. A graph is strictly
f-degenerate if each nonempty subgraph Γ has a vertex v such that deg Γ (v)< f (v). In this …

Vertex arboricity of planar graphs without intersecting 5-cycles

H Cai, J Wu, L Sun - Journal of Combinatorial Optimization, 2018 - Springer
The vertex arboricity va (G) of a graph G is the minimum number of colors the vertices can be
colored so that each color class induces a forest. It was known that va (G) ≤ 3 va (G)≤ 3 for …

Variable degeneracy of graphs with restricted structures

Q Wang, T Wang, X Yang - arXiv preprint arXiv:2112.09334, 2021 - arxiv.org
Bernshteyn and Lee defined a new notion, weak degeneracy, which is slightly weaker than
the ordinary degeneracy. It is proved that strictly $ f $-degenerate transversal is a common …

[HTML][HTML] List vertex-arboricity of toroidal graphs without 4-cycles adjacent to 3-cycles

M Chen, L Huang, W Wang - Discrete Mathematics, 2016 - Elsevier
The vertex-arboricity a (G) of a graph G is the minimum number of colors required to color
the vertices of G such that no cycle is monochromatic. The list vertex-arboricity al (G) is the …

[PDF][PDF] On list vertex 2-arboricity of toroidal graphs without cycles of specific length

H Zhang - Bulletin of the Iranian Mathematical Society, 2016 - bims.iranjournals.ir
The vertex arboricity $\rho (G) $ of a graph $ G $ is the minimum number of subsets into
which the vertex set $ V (G) $ can be partitioned so that each subset induces an acyclic …

Vertex-arboricity of toroidal graphs without K5− and 6-cycles

A Zhu, D Chen, M Chen, W Wang - Discrete Applied Mathematics, 2022 - Elsevier
The vertex-arboricity va (G) of a graph G is defined to be the minimum number of colors
needed to color the vertices of G such that no cycle is monochromatic. The list vertex …

Variable degeneracy on toroidal graphs

R Li, T Wang - arXiv preprint arXiv:1907.07141, 2019 - arxiv.org
Let $ f $ be a nonnegative integer valued function on the vertex-set of a graph. A graph is {\bf
strictly $ f $-degenerate} if each nonempty subgraph $\Gamma $ has a vertex $ v $ such that …

不含相邻短圈的平面图的点荫度问题

刘星, 王慧娟 - Pure Mathematics, 2021 - hanspub.org
在社团网络的研究中, 社团结构划分一直是一个有价值的研究课题. 出于安全考虑,
对一个新的社团结构划分问题进行研究, 它可以在图论中转化为最小化问题. 图G …

[HTML][HTML] A note on the list vertex arboricity of toroidal graphs

Y Wang, M Chen, W Wang - Discrete Mathematics, 2018 - Elsevier
The vertex arboricity a (G) of a graph G is the minimum number of colors required to color
the vertices of G such that no cycle is monochromatic. The list vertex arboricity al (G) is the …