A nonpositive matrix is a real or integer matrix for which each matrix element is a nonpositive number, i.e., for all , .
Nonpositive matrices are therefore a superset of negative matrices.
A nonpositive matrix is a real or integer matrix for which each matrix element is a nonpositive number, i.e., for all , .
Nonpositive matrices are therefore a superset of negative matrices.
Weisstein, Eric W. "Nonpositive Matrix." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/NonpositiveMatrix.html