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Published in:
1993 | OriginalPaper | Chapter
Qualitative Semipositivity
Authors : Charles R. Johnson, David P. Stanford
Published in: Combinatorial and Graph-Theoretical Problems in Linear Algebra
Publisher: Springer New York
Included in: Professional Book Archive
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A real m-by-n matrix A is called semipositive (SP) provided there is a real -nvector x ≥ 0 such that Ax > 0. Vector and matrix inequalities here and throughout the paper denote entrywise inequalities.