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arXiv 2203.10239math.CO
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无生成2-树的平面三角剖分

Plane Triangulations Without Spanning 2-Trees

Allan Bickle

摘要:

2-树是一个图,它可以通过从一个三角形开始,迭代使一个新顶点与现有图的两个相邻顶点邻顶点相邻的操作来形成。1995年,蔡雷真提出了一个问题:是否每个极大可平面图都包含一棵生成2-树。我们通过构造一个没有生成2-树的极大可平面图的无限类来否定地回答这个问题。

英文摘要:

A 2-tree is a graph that can be formed by starting with a triangle and iterating the operation of making a new vertex adjacent to two adjacent vertices of the existing graph. Leizhen Cai asked in 1995 whether every maximal planar graph contains a spanning 2-tree. We answer this question in the negative by constructing an infinite class of maximal planar graphs that have no spanning 2-tree.

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。

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