Let $A$ be a real $n \times n$ matrix. Then there exist orthogonal matrices $T_1$ and $T_2$ such that $A=T_1 D T_2$ where D is a diagonal matrix with positive entries. D is unique up permutation of the diagonal entries. This decomposition is sometimes called Cartan decomposition.
Question: Is it possible to obtain the matrix $D$ for a given matrix $A$ in Sage?
