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arXiv 2402.07009math.CO
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图中的三重罗马支配

Triple Roman Domination in Graphs

Hossein Abdollahzadeh Ahangar, M. Pilar Alvarez, Mustapha Chellali, Seyed Mahmoud Sheikholeslami, Juan Carlos Valenzuela-Tripodoro

AI总结:

本文研究图中的三重罗马支配,要求每城至少三军团防御,给出一般图的界、部分图族的精确值及复杂性结果。

摘要:

罗马支配在图论中已被深入研究。该主题与一种防御策略问题相关,其中罗马军团驻扎在罗马帝国的某些安全城市。军团在帝国周围的部署方式设计为:对任何未设防城市的突然袭击都能被来自强大邻城的军团平息。还有一个附加条件:如果调动军团会使其基地城市失去防御,则任何军团不得移动。在本手稿中,我们开始研究罗马支配的一个变体:三重罗马支配。我们考虑罗马帝国的任何城市必须能够由至少三个军团防御。这些军团应位于被攻击的城市或其邻城之一。我们确定了普通图的三重罗马支配数的各种界,并给出了某些图族的精确值。此外,还获得了复杂性结果。

英文摘要:

The Roman domination in graphs is well-studied in graph theory. The topic is related to a defensive strategy problem in which the Roman legions are settled in some secure cities of the Roman Empire. The deployment of the legions around the Empire is designed in such a way that a sudden attack to any undefended city could be quelled by a legion from a strong neighbour. There is an additional condition: no legion can move if doing so leaves its base city defenceless. In this manuscript we start the study of a variant of Roman domination in graphs: the triple Roman domination. We consider that any city of the Roman Empire must be able to be defended by at least three legions. These legions should be either in the attacked city or in one of its neighbours. We determine various bounds on the triple Roman domination number for general graphs, and we give exact values for some graph families. Moreover, complexity results are also obtained.

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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