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arXiv 2102.01958math.CO
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关于完全染色的一个度量性质

On a metric property of perfect colorings

Anna A. Taranenko

摘要:

给定图的一个完美染色,证明了该图的邻接矩阵的两行之间的$L_1$距离不小于该染色的参数矩阵的相应行之间的$L_1$距离.借助于代数方法,我们对完美$2$ -染色、距离- $l$图和距离正则图中的完美染色,导出了这个结果的推论.我们还提供了例子,当所获得的性质拒绝几个假定的参数矩阵的完美染色的无限图。

英文摘要:

Given a perfect coloring of a graph, we prove that the $L_1$ distance between two rows of the adjacency matrix of the graph is not less than the $L_1$ distance between the corresponding rows of the parameter matrix of the coloring. With the help of an algebraic approach, we deduce corollaries of this result for perfect $2$-colorings, perfect colorings in distance-$l$ graphs and in distance-regular graphs. We also provide examples when the obtained property reject several putative parameter matrices of perfect colorings in infinite graphs.

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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