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On an Analogue of a Property of Singular $M$-matrices, for the Lyapunov and the Stein Operators
Published 7 May 2023 in math.FA | (2305.04932v1)
Abstract: In the setting of real square matrices, it is known that, if $A$ is a singular irreducible $M$-matrix, then the only nonnegative vector that belongs to the range space of $A$ is the zero vector. In this paper, we prove an analogue of this result for the Lyapunov and the Stein operators.
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