Article ID Journal Published Year Pages File Type
4603127 Linear Algebra and its Applications 2009 14 Pages PDF
Abstract

We consider the class of normal complex matrices that commute with their complex conjugate. We show that such matrices are real orthogonally similar to a canonical direct sum of 1-by-1 and certain 2-by-2 matrices. A canonical form for quasi-real normal matrices is obtained as a special case. We also exhibit a special form of the spectral theorem for normal matrices that commute with their conjugate.

Related Topics
Physical Sciences and Engineering Mathematics Algebra and Number Theory