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The entire choosability of plane graphs
被引:0
|作者:
Weifan Wang
Tingting Wu
Xiaoxue Hu
Yiqiao Wang
机构:
[1] Zhejiang Normal University,Department of Mathematics
[2] Beijing University of Chinese Medicine,School of Management
来源:
关键词:
Plane graph;
Entire choosability;
Maximum degree;
D O I:
暂无
中图分类号:
学科分类号:
摘要:
A plane graph G\documentclass[12pt]{minimal}
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\begin{document}$$G$$\end{document} is entirely k\documentclass[12pt]{minimal}
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\begin{document}$$k$$\end{document}-choosable if, for every list L\documentclass[12pt]{minimal}
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\begin{document}$$L$$\end{document} of colors satisfying L(x)=k\documentclass[12pt]{minimal}
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\begin{document}$$L(x)=k$$\end{document} for all x∈V(G)∪E(G)∪F(G)\documentclass[12pt]{minimal}
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\begin{document}$$x\in V(G)\cup E(G) \cup F(G)$$\end{document}, there exists a coloring which assigns to each vertex, each edge and each face a color from its list so that any adjacent or incident elements receive different colors. In 1993, Borodin proved that every plane graph G\documentclass[12pt]{minimal}
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\begin{document}$$G$$\end{document} with maximum degree Δ≥12\documentclass[12pt]{minimal}
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\begin{document}$$\Delta \ge 12$$\end{document} is entirely (Δ+2)\documentclass[12pt]{minimal}
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\begin{document}$$(\Delta +2)$$\end{document}-choosable. In this paper, we improve this result by replacing 12 by 10.
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页码:1221 / 1240
页数:19
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