Document Type
Article
Subject Area(s)
Mathematics
Abstract
A characterization of a class of totally nonnegative matrices whose inverses are M-matrices is given. It is then shown that if A is nonnegative of order n and A^-1 is an M-matrix, then the almost principal minors of A of all orders are nonnegative.
Publication Info
Proceedings of the American Mathematical Society, Volume 36, Issue 2, 1972, pages 326-330.
Rights
© 1972 by American Mathematical Society