2) Laplacian spectral radius
Laplace谱半径
1.
In this note,the relations between the covering number of graph and the Laplacian spectral radius are investigated.
本文讨论图的点覆盖数与图的 Laplace谱半径的关系 ,利用特征向量的技巧得到由图的 L aplace谱半径所确定的关于图的点覆盖数的紧的
2.
B),2004,19(2): 140-148],the authors prove that up to signature isomorphisms U* is the unique graph which maximizes Laplacian spectral radius over all unicyclic mixed graphs on n vertices.
B),2004,19(2):140-148]中,作者证明了:在相差符号同构意下,在所有n个顶点上的单圈混合图中,U*是唯一的达到最大Laplace谱半径的混合图。
3.
In this thesis,we consider the extremal graphs about Laplacian spectral radius of bipartite graphs with k cut edges,bicyclic bipartite graphs,unicyclic graphs with fixed diameters,unicyclic graphs with k pendent edges;some graphs determined by their spectra;cospectral graphs;minimal distance spectral radius.
本论文主要研究了有k条割边的二部图,双圈二部图,有固定直径的单圈图以及有k条悬挂边的单圈图关于Laplace谱半径的极值图:由谱决定的一些图;同谱图;最小距离谱半径。
3) signless Laplacian spectrum
无符号Laplacian谱
4) Laplacian spectrum
Laplace谱
1.
In the first two parts of this paper, we investigate two kinds of modifications and their relations with the Laplacian spectrum of trees, then give an order of trees which have smaller Laplacian spectra radi-u
首先研究了两种特殊的运算-“移接变形”和“剖分(收缩)”对树的Laplace谱半径的影响,然后利用这些结论对具有较小Laplace谱半径的树进行了排序。
2.
The spectral graph theory is one of the important fields of graph theory and combinatorial matrix theory,which mainly concerned with the spectrum,Laplacian spectrum and distance spectrum of a graph and is used widely in quantum chemistry, physics,Computer science,communication networks and information science and so on.
图的谱理论是图论和组合矩阵论的重要研究领域之一,主要涉及图的邻接谱,Laplace谱和距离谱等,在量子化学,物理,计算机科学,通讯网络以及信息科学等领域中均有广泛的应用。
5) Laplace Spectrum
Laplace谱
1.
This paper addresses the problem of ordering trees with diameter 3,denoted as S(a,b),where a≥b≥1,a+b+2=n,n-12≤a≤n-3,by using their Laplace spectrum.
主要讨论了对于直径为3的树S(a,b)(a≥b≥1,a+b+2=n,n-12≤a≤n-3)的Laplace谱排序,证明了它的Laplace谱半径μ(S(a,b))随a的值严格单调递增,而它的第2大Laplace特征值随a的值严格单调递减。
6) symbolic spectrum
符号谱
1.
In view of whether the time series comes from periodic,chaotic or random source,a qualitative method with symbolic spectrum is proposed.
针对待测时间序列是来自周期信号源、混沌信号源还是随机信号源的问题,提出一种用符号谱定性判定的方法。
补充资料:谱半径
谱半径
spectral radius
谱半径【sPeetrai radjus;cneKTp叨‘“.p叭“yc],致川ach代数的元素的 包含这元素的谱的平面上最小闭圆盘的半径p(见元素的谱(spectnlln of ane城拙nt)).一个元素a的谱半径由公式 p(a)一。呱}la”}}’‘”=inf!{a”}}’‘·与其幂的范数相联系,特别地上式蕴涵p(a)‘}}aJ}.Banach空间上一个有界线性算子的谱半径是它作为所有算子的Banach代数的一个元素的谱半径、在Hil-bert空间中一个算子的谱半径等于相似于它的算子的范数中的最大下界(见tZI): “(A)一梦“XAX一‘“·如果该算子是正规的,则p(A)二“A“(见正规算子(norn班1 operator)). 作为BanaCh代数的元素的一个函数,谱半径是上半连续的(但一般不连续).谱半径的下调和性已被证明(t3]).(这就是指如果之”h(:)是某区域D CC到B队业ch代数吸中的一个全纯映射,则zl~刀(h(z))是T调和函数(subha口叩nic functio们).)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条