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1)  Straight trees have crooked roots.
直树也有曲根。
2)  rooted tree
有根树
1.
The process to generate MIS is described by some rooted trees.
完整地研究了寻找一个图的全部极大独立集所需要的理论、寻找范围、计算公式和枚举方法,采用有根树描述,以邻接矩阵中任意一行所对应的顶点为根,再以该行中各个非零元素所对应的那些顶点为根,按照文中所述方法生成有根树,这些有根树就描述出图的全部极大独立集,本方法已用计算机程序实现。
3)  rooted directed tree
根有向树
1.
Gives an algorithm to find effective paths by using the rooted directed tree.
利用根有向树给出一个求有效路径的算法,从而得到一个计算多级互联网络可靠度的简捷方法。
4)  directed rooted tree
有向根树
1.
The Rrotation graph of a hexagonal system is a directed rooted tree.
六角系统的R-旋转图是1棵有向根树,但冠状系统的R-旋转图是一个有向森林,其底图不一定连通。
2.
A directed rooted tree refers to a directed tree which has one vertex with out-degree 0 and all the other vertices with out-degree 1.
有向根树就是只有一个顶点的出度为0,其余顶点的出度均为1的有向树。
3.
defined the R-conception of the rotation, and with which they established a hierarchical structure on the set of perfect matchings of a cata-hexagonal system, which could be represented by a directed rooted tree, and was called the R-rotation graph.
1981年Ohkami等提出了R-旋转变换的概念,并由此变换建立了cata型六角系统的完美匹配集上的一种层次组织结构,它可用一个有向根树来表示,称它为该六角系统的R-旋转图。
5)  Rooted trees
有根树
1.
In this paper, we find a relation between the isomorphism classes of rooted trees and all the inequivalent simple root systems of imprimitive complex reflection groups G(m, l,n).
时俭益教授引进了复反射群的单根系等价性与表出同余性的概念,并给出了本原复反射群G_(12)、G_(24)、G_(25)、G_(26)的所有不等价单根系及其所对应的所有不同余表出,见[12],本文通过讨论非本原复反射群G(m,1,n)的生成元集的结构,得出了本原复反射群G(m,1,n)的单根系的等价类和n个顶点的有根树的同构类之间的关系,并给出非本原复反射群G(m,1,n)(当n=3,4,5时)的所有不等价的单根系及它们对应的所有不同余的表出。
6)  identity rooted tree
幺有根树
补充资料:无根树
【无根树】
 (杂名)七女经曰:“七女告帝释曰:愿与我辈愿,帝释许诺。一女曰:我愿欲得无根无枝无叶树。”
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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