Comprehensive LU Factors of Polynomial Matrices
2020
The comprehensive LU decomposition of a parametric matrix consists of a case analysis of the LU factors for each specialization of the parameters. Special cases can be discontinuous with respect to the parameters, the discontinuities being triggered by zero pivots encountered during factorization. For polynomial matrices, we describe an implementation of comprehensive LU decomposition in Maple, using the RegularChains package.
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