Graphs and Combinatorics ( IF 0.7 ) Pub Date : 2020-08-12 , DOI: 10.1007/s00373-020-02221-5 Aysel Erey
A sequence of vertices \((v_1,\, \dots , \,v_k)\) of a graph G is called a dominating closed neighborhood sequence if \(\{v_1,\, \dots , \,v_k\}\) is a dominating set of G and \(N[v_i]\nsubseteq \cup _{j=1}^{i-1} N[v_j]\) for every i. A graph G is said to be \(k-\)uniform if all dominating closed neighborhood sequences in the graph have equal length k. Brešar et al. (Discrete Math 336:22–36, 2014) characterized k-uniform graphs with \(k\le 3\). In this article we extend their work by giving a complete characterization of all k-uniform graphs with \(k\ge 4\).
中文翻译:
均匀长度支配序列图
顶点的序列\((V_1,\,\点,\,V_K)\)的曲线图的ģ称为主导闭邻域序列如果\(\ {V_1,\,\点,\,V_K \} \)是每个i的G和\(N [v_i] \ nsubseteq \ cup _ {j = 1} ^ {i-1} N [v_j] \)的主导集合。如果图中的所有主导闭合邻域序列都具有相等的长度k,则图G被称为\(k- \)均匀。Brešar等。(离散数学336:22–36,2014年)用\(k \ le 3 \)表征k个均匀图。在本文中,我们通过使用\(k \ ge 4 \)给出所有k均匀图的完整特征来扩展其工作。