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    Updating URV Decompositions in Parallel

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    Date
    1998-10-15
    Author
    Stewart, G. W.
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    Abstract
    A URV decomposition of a matrix is a factorization of the matrix into the product of a unitary matrix (U), an upper triangular matrix (R), and another unitary matrix (V). In an earlier paper [UMIACS-TR-90-86] it was shown how to update a URV decomposition in such a way that it reveals the effective rank of the matrix. It was also argued that the updating procedure could be implemented in parallel on a linear array of processors; however, no specific algorithms were given. This paper gives a detailed implementation of the updating procedure. (Also cross-referenced as UMIACS-TR-92-44)
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    http://hdl.handle.net/1903/570
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