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Rank complement of diagonalizable matrices using polynomial functions
Linköping University, Department of Electrical Engineering, Computer Vision. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Computer Vision. Linköping University, The Institute of Technology.
2001 (English)Report (Other academic)
Abstract [en]

This report defines the rank complement of a diagonalizable matrix (i.e. a matrix which can be brought to a diagonal form by means of a change of basis) as the interchange of the range and the null space. Given a diagonalizable matrix A there is in general no unique matrix Ac which has a range equal to the null space of A and a null space equal to the range of A, only matrices of full rank have a unique rank complement; the zero matrix. Consequently, the rank complement operation is not a distinct operation, but rather a characterization of any operation which makes an interchange of the range and the null space. One particular rank complement operation is introduced here, which eventually leads to an implementation of rank complement operations in terms of polynomials in A. The main result is that for each possible rank r of A there is a polynomial in A which evaluates to a matrix Ac which is a rank complement of A. The report provides explicit expressions for matrix polynomials which compute a rank complement of a symmetric matrix. These results are then generalized to the case of diagonalizable matrices. Finally, a Matlab function is described that implements a rank complement operation based on the results derived.

Place, publisher, year, edition, pages
Linköping, Sweden: Linköping University, Department of Electrical Engineering , 2001. , 23 p.
Series
LiTH-ISY-R, ISSN 1400-3902 ; 2369
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-53321ISRN: LiTH-ISY-R-2369OAI: oai:DiVA.org:liu-53321DiVA: diva2:288596
Available from: 2010-01-21 Created: 2010-01-20 Last updated: 2014-10-08Bibliographically approved

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Nordberg, KlasFarnebäck, Gunnar

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
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Output format
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