Article
Keywords:
nonsingular matrices; $P$-matrices
Summary:
New proofs of two previously published theorems relating nonsingularity of interval matrices to $P$-matrices are given.
References:
[1] M. Fiedler: Special Matrices and Their Use in Numerical Mathematics. (Czech). SNTL, Prague 1981.
[2] M. Fiedler V. Pták:
On Matrices with Non-Positive Off-Diagonal Elements and Positive Principal Minors. Czechoslovak Math. J. 12 (1962), 382-400.
MR 0142565
[4] S. Poljak J. Rohn: Radius of Nonsingularity. KAM Series 88-117, Charles University, Prague 1988.
[6] J. Rohn:
Characterization of a Linear Program in Standard Form by a Family of Linear Programs with Inequality Constraints. To appear in Ekon.-Mat. Obzor.
MR 1059547 |
Zbl 0705.90053
[7] H. Samelson R. Thrall O. Wesler:
A Partition Theorem for Euclidean n-Space. Proc. of the Amer. Math. Society 9 (1958), 805-807.
MR 0097025