On Sign Patterns of 4 × 4 Algebraically Positive Matrices
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DOI: 10.1155/jom/9201328
Abstract: A square matrix A with real entries is said to be algebraically positive (AP) if there exists a real polynomial f such that f ( A ) is a positive matrix. A square sign pattern… read more here.
Keywords: sign; pattern matrices; algebraic positivity; sign pattern ... See more keywords