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Product of two positive contractions

Li, Chi-Kwong
; 
Pelejo, Diane Christine
; 
Pelejo, Diane Christine
; 
Wang, Kuo-Zhong
Abstract
Several characterizations are given for a square matrix that can be written as the product of two positive (semidefinite) contractions. Based on one of these characterizations, and the theory of alternating projections, a Matlab program is written to check the condition and construct the two positive contractions whose product equal to the given matrix, if they exist. (C) 2016 Elsevier Inc. All rights reserved.
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2016-01-01
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Mathematics
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Mathematics
DOI
10.1016/j.laa.2016.03.016
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https://scholarworks.wm.edu/handle/internal/1726
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