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From "alberto trivellato (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-1100) QR factorization fails in revealing rank-deficient matrix
Date Thu, 20 Feb 2014 16:07:19 GMT
alberto trivellato created MATH-1100:
----------------------------------------

             Summary: QR factorization fails in revealing rank-deficient matrix
                 Key: MATH-1100
                 URL: https://issues.apache.org/jira/browse/MATH-1100
             Project: Commons Math
          Issue Type: Bug
    Affects Versions: 3.2
         Environment: Java HotSpot(TM) Client VM (build 19.1-b02, mixed mode, sharing) an
windows 7 professional
            Reporter: alberto trivellato


given a matrix that has not full rank, the method getSolver().isNonSingular() of the class
QRDecomposition returns true.



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