6 citations · 6 across the 5 of their papers we have counts for
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cs.CC2016★ 6 cited
The real nonnegative inverse eigenvalue problem is NP-hard
Alberto Borobia, Roberto Canogar
A list of complex numbers is realizable if it is the spectrum of a nonnegative matrix. In 1949 Suleimanova posed the nonnegative inverse eigenvalue problem (NIEP): the problem of d…
math.RA2016
ACI-matrices of constant rank over arbitrary fields
Alberto Borobia, Roberto Canogar
The columns of a ACI-matrix over a field are independent affine subspaces of . An ACI-matrix has constant rank if all its completions hav…