These observations allow one to formalize the definition of reflection: a reflection is an involutive isometry of an Euclidean space whose set of fixed points is an affine subspace of codimension 1.


察允许我们形式化反射的定义: 反射是欧几里得空间的对合等距同构,它的不动点集合是余维度为 1 的仿射子空间。
的;
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