点集合

點集合

diǎnjíhé

noun

Meanings

1 point set (mathematics)

Characters

to gather; collect

to combine; join

Examples

HSK 7-9

拓扑学研究的是点集合的性质。

Tuòpū xué yánjiū de shì diǎnjíhé de xìngzhì.

Topology studies the properties of point sets.

HSK 7-9

这个点集合在平面上是闭合的。

Zhège diǎnjíhé zài píngmiàn shàng shì bìhé de.

This point set is closed in the plane.

Tips

usage

Mathematical term; appears in topology and analysis (点集拓扑 = point-set topology). In everyday math, the simpler 集合 ('set') is used; 点集合 specifically emphasizes that the elements are points in some space.

Stroke Order

点 diǎn

集 jí

合 hé