Finding Δ(Σ) for a surface σ of characteristic χ(Σ) = −5

Finding Δ(Σ) for a surface σ of characteristic χ(Σ) = −5
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DOI:
10.1002/jgt.20548
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发表时间:
2011-10
影响因子:
0.9
通讯作者:
Rong Luo;Yue Zhao
Rong Luo;Yue Zhao
中科院分区:
数学3区
文献类型:
--
作者:
Rong Luo;Yue Zhao

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对于每个曲面G,我们定义Δ(G)= max{Δ(G)|G是一个最大度为Δ(G)的二类图,它可以嵌入到图{\displaystyle {\frac {G}中.因此,维津的平面图猜想可以重新表述为Δ(λ)= 5,如果λ是一个平面。在本文中,我们证明了Δ(λ)= 9,如果λ是特征χ(λ)= −5的曲面。© 2010 Wiley Periodicals,Inc. J Graph Theory 68:148 - 168,2011
For each surface Σ, we define Δ(Σ) = max{Δ(G)|Gis a class two graph of maximum degree Δ(G) that can be embedded in Σ}. Hence, Vizing's Planar Graph Conjecture can be restated as Δ(Σ) = 5 if Σ is a plane. In this paper, we show that Δ(Σ) = 9 if Σ is a surface of characteristic χ(Σ) = −5. © 2010 Wiley Periodicals, Inc. J Graph Theory 68:148‐168, 2011