algebra (EN)

名词

名词 “algebra”

1. 代数
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   In algebra, we use letters like x and y to represent numbers we don't know yet.
2. 代数（数学结构）
   Complex numbers can be understood as an algebra over the field of real numbers.
3. 集合代数
   In set theory, an algebra of sets includes all possible unions and intersections of its subsets, as well as the empty set.