outer regular set

例句：

1. 1. In mathematics, an outerregular set is a collection of points ina plane that are equidistantfrom the origin and the line joining theorigin to any point on the line.
   在数学中，一个外层正规集是平面上的一个点集合，这些点到原点和原点到该直线上任何一点连线的距离相等。
2. 2. Theouter regular set of a group is thesmallest closed subspace containing all its elements.
   一个群的外层正规集是包含其所有元素的最小闭子空间。
3. 3. Theouter regular set of a matrix is theset of all vectors whose components sumup to zero when multiplied by thematrix.
   矩阵的外层正规集是所有向量的集合，当与矩阵相乘时，这些向量的分量之和为零。