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arXiv 2603.02501math.COcs.DM
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具有唯一标签的欧拉路径的图

Graphs whose Eulerian trails have unique labels

Georgia Institute of Technology(佐治亚理工学院)

Donggyu Kim, Rose McCarty, Caleb McFarland

AI总结:

研究了具有唯一标签的欧拉路径的图结构,证明了3-连通部分的群结构及算法问题与群的词问题的关系。

摘要:

考虑一个无向图,其边被可逆地标记在一个群中。当从一个固定顶点到另一个固定顶点的每条欧拉路径都有相同的标签时,这种情况何时发生?我们对这个问题给出了精确的结构答案。本质上,我们证明每个``3-连通部分''被标记在一个与某些k对应的Z_2^k同构的群中。我们还证明该算法问题可以被归约到群的词问题。

英文摘要:

Consider an undirected graph whose edges are labeled invertibly in a group. When does every Eulerian trail from one fixed vertex to another have the same label? We give a precise structural answer to this question. Essentially, we show that each ``$3$-connected part'' is labeled over a group which is isomorphic to $\mathbb{Z}_2^k$ for some $k$. We also show that the algorithmic problem admits a polynomial-time reduction to the word problem for the group.

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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