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arXiv 2303.06299math.CO
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图的最小独立控制集的重构

Reconfiguration of Minimum Independent Dominating Sets in Graphs

R. C. Brewster, C. M. Mynhardt, L. E. Teshima

摘要:

图$G$的独立控制数$i(G)$是$G$的极大独立集的最小基数,也称为$i(G)$ -集。$G$的$i$ -图,记为$\mathcal{I}(G)$,是其顶点对应于$i(G)$ -集的图,其中两个$i(G)$ -集相邻当且仅当它们相差两个邻顶点。我们证明了不是所有的图都是$i$ -图可实现的,也就是说,给定一个目标图$H$,不一定存在一个源图$G$使得$H$同构于$\mathcal{I}(G)$ .这种图的示例包括$K_{4}-e$和$K_{2,3}$。我们建立了一系列的工具,显示已知的$i$ -图可以用来构建新的$i$ -图,并应用这些结果来构建其他类的$i$ -图,如方块图,超立方体,森林,仙人掌,和单圈图。

英文摘要:

The independent domination number $i(G)$ of a graph $G$ is the minimum cardinality of a maximal independent set of $G$, also called an $i(G)$-set. The $i$-graph of $G$, denoted $\mathcal{I}(G)$, is the graph whose vertices correspond to the $i(G)$-sets, and where two $i(G)$-sets are adjacent if and only if they differ by two adjacent vertices. We show that not all graphs are $i$-graph realizable, that is, given a target graph $H$, there does not necessarily exist a source graph $G$ such that $H$ is isomorphic to $\mathcal{I}(G)$. Examples of such graphs include $K_{4}-e$ and $K_{2,3}$. We build a series of tools to show that known $i$-graphs can be used to construct new $i$-graphs and apply these results to build other classes of $i$-graphs, such as block graphs, hypercubes, forests, cacti, and unicyclic 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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