A Study on Rank Equalities For Idempotent Matrices Investigating Properties and Applications of Idempotent Matrices and Orthogonal Projectors
Main Article Content
Authors
Abstract
A square matrix A over the complexfield C is said to be idempotent if A2=A; said to bean orthogonal projector if it is both idempotent and Hermitian, i.e., A2=A=A*,where A* denotes the conjugate transpose of A. Fromthe similarity theory of matrices, any idempotent matrix A canbe decomposed as , where Ik isthe identity matrix of order k and k is the rank of A;any orthogonal projector A can be decomposed as ,where U-1=U*. Idempotent matrices and orthogonalprojectors appear almost everywhere, and have been the objects of many studiesin matrix theory and its applications.
Downloads
Download data is not yet available.
Article Details
Section
Articles