The (2,2,0) drazin inverse problem

• Author(s): Patrício, Pedro ; Hartwig, Robert E.
• Date: 2012
• Persistent ID: http://hdl.handle.net/1822/20667
• Origin: RepositóriUM - Universidade do Minho
• Subject(s): Drazin inverse; Block matrices
• Document Type: Article
• Language: English

Description

We consider the additive Drazin problem and we study the existence of the Drazin inverse of a two by two matrix with zero (2,2) entry.