A note on a conjecture concerning rank one perturbations of singular M-matrices
B. Anehila, André C. M. Ran · Quaestiones Mathematicae · 2021
A conjecture from [3] concerning the location of eigenvalues of rank one perturbations of singular M-matrices is shown to be false in dimension four and higher, but true for dimension two, as well as for dimension three with an additional condition on the perturbation.