A Möbius-type gluing technique for obtaining edge-critical graphs
A Möbius-type gluing technique for obtaining edge-critical graphs
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用于获得边缘关键图的莫比乌斯型粘合技术
DOI:
10.26493/1855-3974.2039.efc
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发表时间:
2020
期刊:
影响因子:
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通讯作者:
A. Vietri
中科院分区:
文献类型:
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作者:
S. Bonvicini;A. Vietri
Using a technique which is inspired by topology, we construct original examples of 3 - and 4 -edge critical graphs. The 3 -critical graphs cover all even orders starting from 26 ; the 4 -critical graphs cover all even orders starting from 20 and all the odd orders. In particular, the 3 -critical graphs are not isomorphic to the graphs provided by Goldberg for disproving the Critical Graph Conjecture. Using the same approach we also revisit the construction of some fundamental critical graphs, such as Goldberg’s infinite family of 3 -critical graphs, Chetwynd’s 4 -critical graph of order 16 and Fiol’s 4 -critical graph of order 18 .