ordered simplex

例句：

1. 1. The ordered simplex is used to represent a collection of elements in a specific order.
   有序简单元用于表示一组元素按照特定顺序的集合。
2. 2. In mathematics, an ordered simplex is a subset of the real numbers that satisfies certain properties.
   在数学中，有序简单元是实数的一个子集，满足某些属性。
3. 3. The ordered simplex can be used to solve optimization problems by finding the minimum or maximum element in the set.
   有序简单元可以用来解决优化问题，通过找到集合中的最小或最大元素。