Mario Blaum, John L. Fan, et al.
IEEE International Symposium on Information Theory - Proceedings
A positive definite symmetric matrix is called a Stieltjes matrix provided that all its off diagonal elements are nonpositive. We characterize functions which preserve the class of Stieltjes matrices. © 1979.
Mario Blaum, John L. Fan, et al.
IEEE International Symposium on Information Theory - Proceedings
Da-Ke He, Ashish Jagmohan, et al.
ISIT 2007
Heng Cao, Haifeng Xi, et al.
WSC 2003
Richard M. Karp, Raymond E. Miller
Journal of Computer and System Sciences