请输入您要查询的英文单词:

 

单词 Linking coefficient
释义

Linking coefficient

中文百科

环绕数 Linking number

(重定向自Linking coefficient)
这样 (2,4)-环面链环的两条曲线的环绕数是 4。
六个正交叉与两个负交叉,这两条曲线的环绕数为 2。
怀特黑德链环两条曲线环绕数为零。

在数学中,环绕数linking number)是描述三维空间中两条闭曲线环绕的一个数值不变量。直观上,环绕数表示每一条曲线缠绕另一条曲线的次数。环绕数总是整数,但有可能取正数或负数,取决于这两条曲线的定向。

环绕数由高斯以环绕积分的形式引入。它在纽结理论、代数拓扑和微分几何的研究中是重要的对象,并在数学和科学中有许多应用,包括量子力学、电磁学以及 DNA超螺旋的研究。

英语百科

Linking number 环绕数

(重定向自Linking coefficient)
The two curves of this (2,8)-torus link have linking number four.
With six positive crossings and two negative crossings, these curves have linking number two.
The two curves of the Whitehead link have linking number zero.
The Milnor invariants generalize linking number to links with three or more components, allowing one prove that the Borromean rings are linked, though any two components have linking number 0.

In mathematics, the linking number is a numerical invariant that describes the linking of two closed curves in three-dimensional space. Intuitively, the linking number represents the number of times that each curve winds around the other. The linking number is always an integer, but may be positive or negative depending on the orientation of the two curves.

随便看

 

英汉双解词典包含3607232条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
京ICP备09058993号 更新时间:2025/5/13 20:42:45