What is a nonpositive matrix?
Originally Posted by Ene DeneI assume it is a matrix whose entries are all negative or zeros. Then you can "factor" a negative from a matrix because of the scaler multiple rule, thus transforming it into a nonnegative matrix.Code:Search Results: No Searches Found Wikipedia: Results, Negative PlanetMath: Results, Negative MathWorld: Results, Negative
A Negative Definite Matrix - A Hermitian matrix all of whose eigenvalues areOriginally Posted by Ene Dene
negative (or one of the equivalent definitions).
A Negative Semi-Definite Matrix - A Hermitian matrix all of whose eigenvalues
are <=0 (or one of the equivalent definitions).
RonL