Ju l 2 01 7 On rank-width of ( diamond , even hole )-free graphs

Ju l 2 01 7 On rank-width of ( diamond , even hole )-free graphs
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Jul l 2 01 7 关于(菱形,偶孔)无图的等级宽度

DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
Kristina Vuskovic
Kristina Vuskovic
中科院分区:
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文献类型:
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作者:
Isolde Adler;N. Le;H. Müller;M. Radovanović;Nicolas Trotignon;Kristina Vuskovic

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本文给出了一类无团割集且秩宽无界的无(钻石,偶洞)图。一般来说,无偶洞图的秩宽是无界的,因为弦图是无偶洞的。A.A. da Silva,A. Silva和C. Linhares-Sales(2010)证明了平面无偶洞图具有有界的秩宽,并且N.K. Le(2016)证明了不含星星割集的无偶洞图具有有界的秩宽度。一个自然的问题是问,是否偶洞无图没有团割集有界的秩宽度。我们的结果给出了否定的答案。因此,我们不能应用Courcelle,Makowsky和Rotics的元定理,这将为大量问题提供有效的算法,包括最大独立集问题,其复杂性仍然开放(钻石,甚至洞)-无图。
We present a class of (diamond, even hole)-free graphs with no clique cutset that has unbounded rank-width. In general, even-hole-free graphs have unbounded rank-width, because chordal graphs are even-hole-free. A.A. da Silva, A. Silva and C. Linhares-Sales (2010) showed that planar even-hole-free graphs have bounded rank-width, and N.K. Le (2016) showed that evenhole-free graphs with no star cutset have bounded rank-width. A natural question is to ask, whether even-hole-free graphs with no clique cutsets have bounded rank-width. Our result gives a negative answer. Hence we cannot apply the meta-theorem by Courcelle, Makowsky and Rotics, which would provide efficient algorithms for a large number of problems, including the maximum independent set problem, whose complexity remains open for (diamond, even hole)-free graphs.
具有星割集和 2-连接的偶孔无图分解
DOI: 10.1016/j.jctb.2012.10.001
发表时间: 2013
期刊: Journal of Combinatorial Theory, Series B
影响因子: --
作者:
Da Silva M
通讯作者: Da Silva M
DOI: 10.48550/arxiv.1205.2535
发表时间: 2012
期刊: --
影响因子: --
作者:
Aboulker P
通讯作者: Aboulker P