欧氏空间中保定角线性变换的刻划

APPROACH TO A CLASS OF LINEAR TRANSFORMATIONS PRESERVING FIXED ANGLE IN EUCLIDEAN SPACE

引入欧氏空间的保持定角线性变换，得到一些重要结论，如：任一保定角θ线性变换（θ≠０，π）

In this paper a definition is given of how a linear transformation is called preserving fixed angle in Euclidean space.And an important conclusion is reached,that any linear transformation preserving fixed angle θ(θ≠0, π) is the product of two linear transformations that are orthogonal and scalar multiple respectively.