Long cycles and spanning subgraphs of locally maximal 1‐planar graphs
Long cycles and spanning subgraphs of locally maximal 1‐planar graphs
复制标题
局部最大 1â平面图的长循环和跨越子图
DOI:
10.1002/jgt.22542
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发表时间:
2020
影响因子:
0.9
通讯作者:
Carol T. Zamfirescu
中科院分区:
文献类型:
--
作者:
Igor Fabrici;Jochen Harant;Tomáš Madaras;Samuel Mohr;Roman Soták;Carol T. Zamfirescu
A graph is 1‐planarif it has a drawing in the plane such that each edge is crossed at most once by another edge. Moreover, if this drawing has the additional property that for each crossing of two edges the end vertices of these edges induce a complete subgraph, then the graph islocally maximal1‐planar. For a 3‐connected locally maximal 1‐planar graphG, we show the existence of a spanning 3‐connected planar subgraph and prove thatGis Hamiltonian ifGhas at most three 3‐vertex‐cuts, and thatGis traceable ifGhas at most four 3‐vertex‐cuts. Moreover, infinitely many nontraceable 5‐connected 1‐planar graphs are presented.
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DOI:
--
发表时间:
1973
期刊:
Journal of Combinatorial Theory
影响因子:
--
作者:
B. Grünbaum;H. Walther
通讯作者:
H. Walther
影响因子:
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作者:
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C. Zamfirescu
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L. Moser
影响因子:
0.8
作者:
H. Fleischner
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H. Fleischner
影响因子:
0.9
作者:
Zhicheng Gao
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