arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 0906.1086cs.DM
收藏

关于Fulkerson猜想

On Fulkerson conjecture

Jean-Luc Fouquet, Jean-Marie Vanherpe

摘要:

如果$G$是一个无桥立方图,Fulkerson证明了我们可以找到6个完美匹配(一个{ \em Fulkerson覆盖}),并且$G$的每条边恰好包含在其中的两个中. Fulkerson猜想的一个推论是,每个无桥立方图都有3个完美匹配,且其交集为空(这个问题被称为Fan Raspaud猜想)。一个{ \em FR-三元组}是3个这样的完美匹配的集合。我们在这里展示如何从两个FR-三元组导出Fulkerson覆盖。此外,我们给出了一个简单的证明,富尔克森猜想成立的一些类著名的咆哮。

英文摘要:

If $G$ is a bridgeless cubic graph, Fulkerson conjectured that we can find 6 perfect matchings (a{\em Fulkerson covering}) with the property that every edge of $G$ is contained in exactly two of them. A consequence of the Fulkerson conjecture would be that every bridgeless cubic graph has 3 perfect matchings with empty intersection (this problem is known as the Fan Raspaud Conjecture). A {\em FR-triple} is a set of 3 such perfect matchings. We show here how to derive a Fulkerson covering from two FR-triples. Moreover, we give a simple proof that the Fulkerson conjecture holds true for some classes of well known snarks.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑