网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Symmetric closure
释义

Symmetric closure

中文百科

对称闭包

在数学中,集合 X 上的二元关系 R对称闭包X 上包含 R 的最小的对称关系。

例如,若定义 X 为机场的集合,并且 x R y 当且仅当 “存在从 xy 的直航航班”,则 R 的对称闭包为关系 R' 满足“ x R' y 当且仅当存在从 xy 及从 yx 的直航航班”。

英语百科

Symmetric closure 对称闭包

In mathematics, the symmetric closure of a binary relation R on a set X is the smallest symmetric relation on X that contains R.

For example, if X is a set of airports and xRy means "there is a direct flight from airport x to airport y", then the symmetric closure of R is the relation "there is a direct flight either from x to y or from y to x". Or, if X is the set of humans (alive or dead) and R is the relation 'parent of', then the symmetric closure of R is the relation "x is a parent or a child of y".

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/21 13:07:37