Characterizations of rectangular totally
β
Rafael CantΓ³; Beatriz Ricarte; Ana M. Urbano
π
Article
π
2010
π
Elsevier Science
π
English
β 177 KB
An n Γ m real matrix A is said to be totally positive (strictly totally positive) if every minor is nonnegative (positive). In this paper, we study characterizations of these classes of matrices by minors, by their full rank factorization and by their thin QR factorization.