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Making Matrices Better: Geometry and Topology of Singular Value and Polar Decomposition
Journal article   Open access   Peer reviewed

Making Matrices Better: Geometry and Topology of Singular Value and Polar Decomposition

Dennis DeTurck, Amora Elsaify, Herman Gluck, Benjamin Grossmann, Joseph Ansel Hoisington, Anusha M. Krishnan and Jianru Zhang
Notices of the American Mathematical Society, v 64(8), pp 876-886
01 Sep 2017
url
https://doi.org/10.1090/noti1571View
Published, Version of Record (VoR)Maybe Open Access (Publisher Bronze) Open

Abstract

Our goal is to see the space of matrices of a given size from a geometric and topological perspective, with emphasis on the families of various ranks and how they fit together. We pay special attention to the nearest orthogonal neighbor and nearest singular neighbor of a given matrix, since both play central roles in matrix decompositions, and then against this visual backdrop examine the polar and singular value decompositions and some of their applications.

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