Friedland, ShmuelShmuelFriedlandHershkowitz, DanielDanielHershkowitzRump, Siegfried M.Siegfried M.Rump2021-02-022021-02-022005-01-01Electronic Journal of Linear Algebra (12): 17-24 (2005-01-01)http://hdl.handle.net/11420/8667The question of how many elements of a real positive stable matrix must be positive is investigated. It is shown that any real stable matrix of order greater than 1 has at least two positive entries. Furthermore, for every stable spectrum of cardinality greater than 1 there exists a real matrix with that spectrum with exactly two positive elements, where all other elements of the matrix can be chosen to be negative.en1081-381020051724Companion matrixPositive elementary symmetric functionsStable matrixInformatikMathematikJournal Article10.13001/1081-3810.1142Other