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Some rank equalities about combinations of two idempotent matrices

✍ Scribed by Kezheng Zuo


Book ID
107531528
Publisher
Wuhan University
Year
2010
Tongue
English
Weight
298 KB
Volume
15
Category
Article
ISSN
1007-1202

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Baksalary and Baksalary [J.K. Baksalary, O.M. Baksalary, Nonsingularity of linear combinations of idempotent matrices, Linear Algebra Appl. 388 (2004) 25-29] proved that the nonsingularity of P 1 + P 2 , where P 1 and P 2 are idempotent matrices, is equivalent to the nonsingularity of any linear com