Edge proximity and matching extension in punctured planar triangulations
Edge proximity and matching extension in punctured planar triangulations
复制标题
穿孔平面三角剖分中的边缘邻近度和匹配扩展
DOI:
10.1016/j.disc.2017.07.017
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发表时间:
2017
影响因子:
0.8
通讯作者:
J. Fujisawa and A. Saito
中科院分区:
文献类型:
--
作者:
R.E.L. Aldred;J. Fujisawa and A. Saito
A matching M in a graph G is said to be extendable if there exists a perfect matching of G containing M. In 1989, it was shown that every connected planar graph with at least 8 vertices has a matching of size three which is not extendable. In contrast, the study of extending certain matchings of size three or more has made progress in the past decade when the given graph is 5-connected planar triangulation or 5-connected plane graphs with few non-triangular faces. In this paper, we prove that if G is a 5-connected plane graph of even order in which at most two faces are not triangular and M is a matching of size four in which the edges lie pairwise distance at least three apart, then M is extendable. A related result concerning perfect matching with proscribed edges is shown as well.
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DOI:
10.4310/joc.2016.v7.n2.a15
发表时间:
2016
期刊:
The Journal of Combinatorics
影响因子:
--
作者:
R. Aldred;M. Plummer
通讯作者:
M. Plummer
DOI:
10.1016/j.disc.2010.03.027
发表时间:
2010
期刊:
Discret. Math.
影响因子:
--
作者:
R. Aldred;M. Plummer
通讯作者:
M. Plummer
DOI:
--
发表时间:
2004
期刊:
Australas. J Comb.
影响因子:
--
作者:
R. Aldred;M. Plummer
通讯作者:
M. Plummer
影响因子:
0.9
作者:
R. Aldred;M. Plummer
通讯作者:
M. Plummer
DOI:
10.37236/2952
发表时间:
2014
期刊:
Electron. J. Comb.
影响因子:
--
作者:
R. Aldred;J. Fujisawa
通讯作者:
J. Fujisawa