A geometrical representation of the spectra of four dimensional nonnegative matrices

作者：Benvenuti Luca^*

来源：Linear Algebra and Its Applications, 2014, 445: 162-180.

DOI：10.1016/j.laa.2013.12.019

• Nonnegative inverse eigenvalue problem
• Nonnegative matrices

A geometrical representation of the set of four complex numbers which are the spectrum of 4-dimensional entrywise nonnegative real matrices is provided. The characterization is based on the result for the nonnegative inverse eigenvalue problem (NIEP) from the coefficients of the characteristic polynomial given in [16].

• 出版日期2014-3-15