A note on a conjecture concerning rank one perturbations of singular M-matrices
arXiv:2007.11453
Abstract
A conjecture from a paper by J. Bierkens and A.C.M. Ran 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.
12 pages, 3 figures