reducible set

例句：

1. 1.The reducible set of integers is the set of all positive integers less than or equal to a given number.
   整数的可减少集合是所有小于或等于给定数的正整数的集合。
2. 2.In linear algebra, the reducible set of a matrix is the set of all vectors that can be expressed as a linear combination of its columns.
   在线性代数中，矩阵的可减少集合是所有可以表示为其列的线性组合的所有向量的集合。
3. 3. The reducible set of polynomial functions is the set of all polynomial functions whose degree is at most the degree of the givenpolynomial.
   多项式函数的可减少集合是所有最多与给定多项式度相等的多项式函数的集合。