Abstract:
Let H be a (separable) Hilbert space and {e k } k≥1 a fixed orthonormal basis of H. Motivated by many papers on scaled projections, angles of subspaces and oblique projections, we define and study the notion of compatibility between a subspace and the abelian algebra of diagonal operators in the given basis. This is used to refine previous work on scaled projections, and to obtain a new characterization of Riesz frames. © 2005 Elsevier Inc. All rights reserved.
Registro:
Documento: |
Artículo
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Título: | Weighted projections and Riesz frames |
Autor: | Antezana, J.; Corach, G.; Ruiz, M.; Stojanoff, D. |
Filiación: | Depto. de Matemática, FCE-UNLP and IAM-CONICET, La Plata, Argentina Depto. de Matemática, FI-UBA and IAM-CONICET, Saavedra 15, Piso 3, Buenos Aires 1083, Argentina Depto. de Matemática, FCE-UNLP and IAM-CONICET, 1 y 50 (1900), La Plata, Argentina
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Palabras clave: | Angles; Compatibility; Frames; Riesz frames; Scaled projection; Weighted projection; Computation theory; Least squares approximations; Matrix algebra; Optimization; Regression analysis; Compatibility; Riesz frames; Scaled projection; Weighted projection; Linear algebra |
Año: | 2005
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Volumen: | 402
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Número: | 1-3
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Página de inicio: | 367
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Página de fin: | 389
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DOI: |
http://dx.doi.org/10.1016/j.laa.2005.01.023 |
Título revista: | Linear Algebra and Its Applications
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Título revista abreviado: | Linear Algebra Its Appl
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ISSN: | 00243795
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CODEN: | LAAPA
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00243795_v402_n1-3_p367_Antezana |
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Citas:
---------- APA ----------
Antezana, J., Corach, G., Ruiz, M. & Stojanoff, D.
(2005)
. Weighted projections and Riesz frames. Linear Algebra and Its Applications, 402(1-3), 367-389.
http://dx.doi.org/10.1016/j.laa.2005.01.023---------- CHICAGO ----------
Antezana, J., Corach, G., Ruiz, M., Stojanoff, D.
"Weighted projections and Riesz frames"
. Linear Algebra and Its Applications 402, no. 1-3
(2005) : 367-389.
http://dx.doi.org/10.1016/j.laa.2005.01.023---------- MLA ----------
Antezana, J., Corach, G., Ruiz, M., Stojanoff, D.
"Weighted projections and Riesz frames"
. Linear Algebra and Its Applications, vol. 402, no. 1-3, 2005, pp. 367-389.
http://dx.doi.org/10.1016/j.laa.2005.01.023---------- VANCOUVER ----------
Antezana, J., Corach, G., Ruiz, M., Stojanoff, D. Weighted projections and Riesz frames. Linear Algebra Its Appl. 2005;402(1-3):367-389.
http://dx.doi.org/10.1016/j.laa.2005.01.023