Characterizations of rectangular totally and strictly totally positive matrices |
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| Authors: | Rafael Cantó Beatriz Ricarte |
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| Institution: | Institut de Matemàtica Multidisciplinar, Universitat Politècnica de València, 46071 València, Spain |
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| Abstract: | An n×m real matrix A is said to be totally positive (strictly totally positive) if every minor is nonnegative (positive). In this paper, we study characterizations of these classes of matrices by minors, by their full rank factorization and by their thin QR factorization. |
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| Keywords: | 65F40 15A15 15A23 |
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