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单词 Interior point
释义

Interior point

中文百科

内部 Interior (topology)

(重定向自Interior point)
点 x 是 S 的内部点,因为它包含在 S 内并有一个开球围绕着它。点 y 在 S 的边界上。
The red shapes are not interior-disjoint the blue Triangle. The green and the yellow shapes are interior-disjoint with the blue Triangle, but only the yellow shape is entirely disjoint from the blue Triangle.
p ist innerer Punkt von V

数学上,特别是在拓扑学中,拓扑空间内点集 S内部(interior,又称开核 open kernel)含有所有直观上“不在 S 的边界上”的 S 的点。S 的内部中的点称为 S内点

等价地,S 的内部是 S 补集的闭包的补集。内部的概念在很多情况下和闭包的概念对偶。

一个集合的外部是它补集的内部,等同于它闭包的补集;它包含既不在集合内,也不在边界上的点。一个子集的内部、边界和外部一同将整个空间分为三块(或者更少,因为这三者有可能是空集)。内部和外部总是开的,而边界总是闭的。没有内部的集合叫做边缘集

英语百科

Interior (topology) 内部

(重定向自Interior point)
The point x is an interior point of S. The point y is on the boundary of S.
The red shapes are not interior-disjoint the blue Triangle. The green and the yellow shapes are interior-disjoint with the blue Triangle, but only the yellow shape is entirely disjoint from the blue Triangle.
p ist innerer Punkt von V

In mathematics, specifically in topology, the interior of a subset S of points of a topological space X consists of all points of S that do not belong to the boundary of S. A point that is in the interior of S is an interior point of S.

The interior of S is the complement of the closure of the complement of S. In this sense interior and closure are dual notions.

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更新时间:2025/6/17 3:48:17