Let $\G(v,e)$ be the set of all simple graphs with $v$ vertices and $e$ edges and let $P_2(G)=\sum d_i^2$ denote the sum of the squares of the degrees, $d_1, >..., d_v$, of the vertices of $G$. It is known that the maximum value of $P_2(G)$ for $G \in...
D de Caen. An upper bound on the sum of squares of degrees in a graph, Discrete Math, 1998, 185: 245-248.D. de Caen.An upper bound on the sum of squares of degrees in a graph. Discrete Mathematics . 1998D. de Caen, An upper bound on the sum of squares of degrees in a ...
百度试题 结果1 题目在一个无向图中,所有顶点的度数之和等于所有边数的( )倍。In a undirected graph, the sum of degrees of all vertices is equal to the amount of all edges times ().显示解析 相关知识点: 试题来源: 解析 2 反馈 收藏
百度试题 结果1 题目 3. In an undirected graph, the sum of degrees of all vertices is equal to () times the number of edges. A. 2 B. 1/2 C. 1 D. 4 相关知识点: 试题来源: 解析 A 反馈 收藏
1) the bound of the sum of the squares of the degrees in a graph 图中度平方和的界2) Vertex Arboricity of Square Graphs 平方图的点荫度3) sum of the squares of the degree 度平方和4) the square of graphs 图的平方 1. The mean distance of composite graphs and the square of graphs...
4. In a directed graph, the sum of the in degrees of all vertices is equal to () times the sum of the out degrees of all vertices. A.1 B.1/2 C.1 D.4 点击查看答案 你可能感兴趣的试题 判断题 ( ) 起动机中的换向器是将交流电变成直流电的部件。 答案:错误 点击查看答案解析 单项选择...
We introduce suitably modified versions of the classical adjacency matrix and the Laplacian matrix involving the degrees of the vertices of a graph. Moreover, we formulate the ISI index in terms of these matrices.doi:10.1007/s10910-020-01170-xFengwei Li...
Read about Euler's theorems in graph theory such as the path theorem, the cycle theorem, and the sum of degrees theorem. See examples of the...
Sum of powers of the degrees of graphs: extremal results and bounds The vertex k-partiteness of graph G is defined as the fewest number of vertices whose deletion from G yields a k-partite graph. In this paper, we characterize the extremal value of the reformulated first Zagreb index, the...
在一个无向图中,所有顶点的度数之和等于所有边数的()倍。 In a undirected graph, the sum of degrees of all vertices is equal to the amount of all edges times ().A.2B.3C.1D.1/2