Sequences of Structured Matrices
Tools and Applications
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This book provides a systematic and unifying treatment of the spectral analysis of matrix sequences collecting the state of the art of the research in this field and providing new advanced results which are interesting both from the theoretical and from the algorithmic point of view. The first part concerns the description and analysis of the available tools, together with their generalization including the development of new effective tools of analysis. The basic concept of approximating class of sequences is introduced and analyzed in depth. Some new results of great interest have been obtai...
This book provides a systematic and unifying treatment of the spectral analysis of matrix sequences collecting the state of the art of the research in this field and providing new advanced results which are interesting both from the theoretical and from the algorithmic point of view. The first part concerns the description and analysis of the available tools, together with their generalization including the development of new effective tools of analysis. The basic concept of approximating class of sequences is introduced and analyzed in depth. Some new results of great interest have been obtained and applied to Toeplitz sequences. The classes of g-circulant and g-Toeplitz matrix sequences are introduced as well, and their spectral analysis is carried out. The second part is addressed to applications. It contains new and interesting results. A relevant role is played by the preconditioning of g-Toeplitz matrix sequences by means of g-circulant matrices with a specific attention tothe regularizing properties which take their importance in the applications concerning image processing, filtering and restoration. Another application concerns two-grid and multi-grid techniques.
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