In this paper, we study the approximation problem on the closed convex cone, and prove that there exists a unique soluti......

本文主要讨论下面两个问题：问题Ⅰ：给定矩阵X,B∈Rm×n,求对称正交矩阵A∈SORm×m,使得AX=B．问题Ⅱ：给定矩阵（?）∈Rm×m,求矩阵A*∈SE使......