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04.2.2. Characterizations of Hermitian Projectors

Published online by Cambridge University Press:  11 June 2004

Geert Dhaene  and
Luc Lauwers
Geert Dhaene
Affiliation:
Center for Economic Studies, K.U. Leuven, Belgium
Luc Lauwers
Affiliation:
Center for Economic Studies, K.U. Leuven, Belgium
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Extract

Let P in be a projector with P+ its Moore–Penrose inverse and PH its conjugate transpose. Werner (2002) provides a list of equivalent conditions for P to be Hermitian.

Type
PROBLEMS AND SOLUTIONS
Information
Econometric Theory , Volume 20 , Issue 2 , April 2004 , pp. 427
Copyright
© 2004 Cambridge University Press

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References

REFERENCE

Werner, H.J. (2002) Partial isometry and idempotent matrices. Solution 28-7.5. IMAGE, The Bulletin of the International Linear Algebra Society 29, 31–32.Google Scholar