Open problems on GKK τ-matrices

Submitted by F. Uhlig
https://doi.org/10.1016/S0024-3795(01)00492-XGet rights and content
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Abstract

We propose several open problems on GKK τ-matrices raised by examples showing that some such matrices are unstable.

MSC

15A15
15A18
15A29
12A57

Keywords

GKKτ-matrices
P-matrices
M-matrices
Stability
Eigenvaluemonotonicity
Principalminors
Almost principal minors
Dispersal
Hadamard–Fischer inequality
Newton inequality
Inverse eigenvalue problem

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