1) Removable Singularity
可去奇点
2) removable ear
可去耳朵
1.
The tight upper and lower bounds of the number of removable ears in a non-bipartite graph on v verties(v≥6) are determined,which are 3(v-1)(v-2)/2 and 3 respectively.
得到了有v个顶点(v≥6)非二部1-可扩图的可去耳朵数的紧的上、下界分别为3(v-1)(v-2)/2和3。
3) removable edge
可去边
1.
Contractible edges and removable edges in connected graphs are a powerful tool to study the structures of connected graphs and to prove some properties of connected graphs by induction.
图的可收缩边与可去边是研究连通图的构造和使用归纳法证明连通图的一些性质的有力工具。
2.
In this paper,some properties of removable edge in 4-connected graphs are obtained.
给出了4连通图中可去边的一些性质。
3.
In this paper we show that in a 4connected graph G with minimum degree at least four or girth at least five, any cycle C of G contains at least two removable edges.
给出某些4 连通图中圈上的可收缩边和可去边的分布情况,得到如下结果:最小度至少为4或围长至少为5的4 连通图,其任一圈上至少有两条可去边;对4 连通图中的某些最长圈上至少有两条可收缩边。
4) Removable circuits
可去圈
5) removable edge
可去边数
1.
It is proved in this paper that there are at least (v+4)/2 removable edges in planar 3-connected graphs with v > 6 .
用v表示G的顶点数,本文证明了当v≥6时,3连通平面图G的可去边数的下界是v+4/2,此下界是可以达到的。
6) removable set
可去集
参考词条
补充资料：Hirzebruch奇点
hirzebruch奇点就是用方程z^d=x^a * y^b定义的曲面奇点。 大数学家hirzebruch第一个系统研究了这种奇点。
这类奇点和连分数有着密切联系。它是代数几何－－特别是代数曲面中的一类重要研究对象。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。