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A Matrix Problem Concerning Projections

Published online by Cambridge University Press:  20 January 2009

Hans Schneider
Hans Schneider
Affiliation:
The Queen's University, Belfast.
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The following problem is a slight generalisation of one posed partly solved by H. Nagler.1 We shall use A* for the conjugate transpose of a matrix A. A projection is an idempotent matrix, its latent roots consist of units and zeros.

Type
Research Article
Information
Proceedings of the Edinburgh Mathematical Society , Volume 10 , Issue 3 , January 1956 , pp. 129 - 130
Copyright
Copyright © Edinburgh Mathematical Society 1956

References

Page 129 note 1 Nagler, H., “On a certain matrix product with specified latent roots,” Proc. Edinburgh Math. Soc. (2), 10 (1953), 21–24.CrossRefGoogle Scholar