Choosability with separation of planar graphs without prescribed cycles
Choosability with separation of planar graphs without prescribed cycles
复制标题
没有规定周期的平面图分离的选择性
DOI:
10.1016/j.amc.2019.124756
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发表时间:
2020-02
影响因子:
4
通讯作者:
Weifan Wang
中科院分区:
文献类型:
--
作者:
Min Chen;Yingying Fan;Raspaud Andre;Wai Chee Shiu;Weifan Wang
In terms of constraining the list assignment, one refinement ofk-choosability is considered as choosability with separation. We call a graph (k, d)-choosable if it is colorable from lists of sizekwhere adjacent vertices have at mostdcommon colors in their lists. If two cycles have exactly one common edge, then they are said to be normally adjacent.In this article, it is shown that planar graphs without 5-cycles and normally adjacent 4-cycles are (3,1)-choosable. This extends a result that planar graphs without 5- and 6-cycles are (3,1)-choosable (Choi et al. (2016))
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