TY - JOUR AU - Johnson, Charles R. AU - Marijuán López, Carlos AU - Pisonero Pérez, Miriam PY - 2017 SN - 0024-3795 UR - http://uvadoc.uva.es/handle/10324/35911 AB - A method is developed to show that certain spectra cannot be realized for the S-NIEP. It is applied in the 5-by-5 case to rule out many spectra that were previously unresolved. These are all in the case of 3 positive and 2 negative eigenvalues as all... LA - eng PB - Elsevier KW - Álgebra KW - Simetría TI - Ruling Out Certain 5-Spectra for the Symmetric Nonnegative Inverse Eigenvalue Problem DO - https://doi.org/10.1016/j.laa.2016.09.022 ER -