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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Low rank update of singular values
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by Delin Chu and Moody Chu PDF
Math. Comp. 75 (2006), 1351-1366 Request permission

Abstract:

The notion of a low rank update arises in many important applications. This paper deals with the inverse problem of updating a rectangular matrix by additive low rank matrices so as to reposition the associated singular values. The setting is analogous to the classical pole assignment problem where eigenvalues of a square matrix are relocated. Precise and easy-to-check necessary and sufficient conditions under which the problem is solvable are completely characterized, generalizing some traditional Weyl inequalities for singular values. The constructive proof makes it possible to compute such a solution numerically. A pseudo algorithm is outlined.
References
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Additional Information
  • Delin Chu
  • Affiliation: Department of Mathematics, National University of Singapore, 2 Science Drive 2, Singapore 117543
  • Email: matchudl@math.nus.edu.sg
  • Moody Chu
  • Affiliation: Department of Mathematics, North Carolina State University, Raleigh, North Carolina 27695-8205
  • Email: chu@math.ncsu.edu
  • Received by editor(s): December 17, 2004
  • Received by editor(s) in revised form: April 1, 2005
  • Published electronically: February 27, 2006
  • Additional Notes: This research was supported in part by the National Science Foundation under grants DMS-0073056 and CCR-0204157
  • © Copyright 2006 American Mathematical Society
  • Journal: Math. Comp. 75 (2006), 1351-1366
  • MSC (2000): Primary 68F18, 93B55, 15A18
  • DOI: https://doi.org/10.1090/S0025-5718-06-01825-4
  • MathSciNet review: 2219032