Optimal Geršgorin-style estimation of the singular value

Main Article Content

Ch. Johnson
J. Peña
T. Szulc


In estimating the largest singular value of an n-by-n complex matrix, a prior result shows that it is attained at one of n(n−1) sparse matrices in the equiradial class. Here, circumstancesare identified under which the set of possible optimizers canbe further narrowed. The results used to show this may be of independent interest.

Article Details