set theory 集合论
ordered pair 有序对
tuple 元组
direct product 直接积
1. The Cartesian product of A and B is denoted by A × B.
A和B的笛卡尔积记作A × B。
2. Understanding the Cartesian product is essential for set theory.
理解笛卡尔积对集合论至关重要。
A: How do you calculate the Cartesian product?
A：如何计算笛卡尔积？
B: You list all possible ordered pairs from the two sets.
B：你列出两个集合中所有可能的有序对。
1) 集合运算
2) 有序对集合
3) 数学基本概念
1. 笛卡尔积
e.g.
The Cartesian product of two non-empty sets is non-empty.
两个非空集合的笛卡尔积是非空的。
noun
1. The set of all possible ordered pairs from two or more sets.