Extended M-Matrices and Subtangentiality
نویسندگان
چکیده
The concept of a singular M-matrix A with respect to a proper cone X is extended, by replacing the usual regularity condition A = al B for a Xnonnegative matrix B with the weaker condition, exponential nonnegativity of A. As in earlier work which dealt with the nonsingular case, in the present characterizations the lack of regularity is overcome by employing subtangentiality.
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