arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2501.14554math.COcs.DM
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连续图的组合性质:挑战、解决方案与开放问题综述

Combinatorial properties of continuous graphs: A survey of challenges, solutions and open problems

Alexander Grigoriev, Katherine Faulkner

AI总结:

本文聚焦连续图(边为单位长度连续区间)上的组合优化问题,综述了独立集、顶点覆盖等问题的已知研究成果,并整理了相关开放问题清单,为该领域研究提供参考。

摘要:

受图论中诸多棘手的组合优化问题启发,本文研究了一系列由图所确定的度量空间与拓扑定义的相关问题。我们特别介绍了定义在所谓连续图(或称度量图)上的独立集(Independent Set)、顶点覆盖(Vertex Cover)、色数(Chromatic Number)与树宽(Treewidth)问题,这类图的每条边都由单位长度的连续区间表示,而非一对顶点。若将任意单位区间边上的任意一点都视为击中集或覆盖集的可能成员,这些经典组合问题会变得更为复杂,也衍生出许多开放问题。值得注意的是,在诸多实际应用中,这种图的连续视角比图的经典组合定义更符合自然场景。本文的贡献分为两方面:其一,我们综述了连续图上优化问题的已知研究结果;其二,我们整理了一份与连续图相关的开放问题清单。

英文摘要:

Inspired by notorious combinatorial optimization problems on graphs, in this paper we consider a series of related problems defined using a metric space and topology determined by a graph. Particularly, we present the Independent Set, Vertex Cover, Chromatic Number and Treewidth problems on, so-called, continuous or metric graphs where every edge is represented by a unit-length continuous interval rather than by a pair of vertices. If any point of any unit-interval edge is considered as a possible member of a hitting set or a cover, the classical combinatorial problems become trickier and many open questions arise. Notably, in many real-life applications, such a continuous view of a graph is more natural than the classic combinatorial definition of a graph. The contribution of this paper is twofold: i) we survey the known results for optimization problems on continuous graphs, and ii) we create a list of open problems related to the continuous 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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