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Generalized matrix inverses and the generalized Gauss-Markoff theorem Ang , Siow-Leong
Abstract
In this thesis we present the generalization of the Moore-Penrose pseudo-inverse in the sense that it satisfies the following conditions. Let x be an m × n matrix of rank r , and let u and v be symmetric positive semi-definite matrices of order m and n and rank s and t respectively, such that s.t ≥ r , and column space of x ⊂ column space of u row space of x⊂ row space of v. Then x≠ is called the generalized inverse of x with respect to u and v if and only if it satisfies : (i) xx≠x = x (ii) x≠xx≠= x≠ (iii) (xx≠)’ = u⁺xx≠u (iv) (x≠x)' = v⁺x≠xv , where U⁺ and V⁺ are the Moore-Penrose pseudo-inverses of U and V respectively. We further use this result to generalize the fundamental Gauss-Markoff theorem for linear estimation, and we also use it in the minimum mean square error estimation of the general model y = Xβ + ε , that is, we allow the covariance matrix of y to be symmetric positive semi-definite.
Item Metadata
Title |
Generalized matrix inverses and the generalized Gauss-Markoff theorem
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1971
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Description |
In this thesis we present the generalization of the Moore-Penrose pseudo-inverse in the sense that it satisfies the following conditions. Let x be an m × n matrix of rank r , and let u and v be symmetric positive semi-definite matrices of order m and n and rank s and t respectively, such that s.t ≥ r , and column space of x ⊂ column space of u row space of x⊂ row space of v.
Then x≠ is called the generalized inverse of x with respect to u and v if and only if it satisfies :
(i) xx≠x = x
(ii) x≠xx≠= x≠
(iii) (xx≠)’ = u⁺xx≠u
(iv) (x≠x)' = v⁺x≠xv ,
where U⁺ and V⁺ are the Moore-Penrose pseudo-inverses of U and V respectively. We further use this result to generalize the fundamental Gauss-Markoff theorem for linear estimation, and we also use it in the minimum mean square error estimation of the general model y = Xβ + ε , that is, we allow the covariance matrix of y to be symmetric positive semi-definite.
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Type | |
Language |
eng
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Date Available |
2011-04-15
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0302209
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Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.