Subdirect sums of Nekrasov matrices
Chaoqian Li, Qilong Liu, Lei Gao, Yaotang Li · Linear and Multilinear Algebra · 2015
Some sufficient conditions ensuring that the subdirect sum of Nekrasov matrices is in the class of Nekrasov matrices are given. In particular, we obtain that the -subdirect sum is a Nekrasov matrix, when is a Nekrasov matrix and is a strictly diagonally dominant matrix.