| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4633619 | Applied Mathematics and Computation | 2009 | 11 Pages |
Abstract
In their paper [Y. Tian, G.P.H. Styan, Rank equalities for idempotent and involutory matrices. Linear Algebra Appl. 335 (2001) 101–117], Tian and Styan established several rank equalities involving a pair of idempotent matrices P and Q. Subsequently, these results are reinvestigated from the point of view of the following question: provided that idempotent P, Q are Hermitian, which relationships given in the aforementioned paper remain valid when ranks are replaced with column spaces? Simultaneously, some related results are established, which shed additional light on the links between subspaces attributed to various functions of a pair of orthogonal projectors.
Related Topics
Physical Sciences and Engineering
Mathematics
Applied Mathematics
Authors
Oskar Maria Baksalary, Götz Trenkler,