![[Review published in SIAM Review, Vol. 56, Issue 1, pp. 189–191.]](http://s1.studyres.com/store/data/017041202_1-65d6c90f40ee4c0571100dd75b61a7f5-300x300.png)
Linear Algebra Review Vectors By Tim K. Marks UCSD
... Orthonormal Matrices A square matrix is orthonormal (also called unitary) if its columns are orthonormal vectors. – A matrix A is orthonormal iff AAT = I. • If A is orthonormal, A-1 = AT AAT = ATA = I. ...
... Orthonormal Matrices A square matrix is orthonormal (also called unitary) if its columns are orthonormal vectors. – A matrix A is orthonormal iff AAT = I. • If A is orthonormal, A-1 = AT AAT = ATA = I. ...
