TY - JOUR U1 - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed) A1 - Adm, Mohammad A1 - Garloff, Jürgen T1 - Invariance of total nonnegativity of a matrix under entry-wise perturbation and subdirect sum of totally nonnegative matrices JF - Linear Algebra and its Applications N2 - A real matrix is called totally nonnegative if all of its minors are nonnegative. In this paper, the minors are determined from which the maximum allowable entry perturbation of a totally nonnegative matrix can be found, such that the perturbed matrix remains totally nonnegative. Also, the total nonnegativity of the first and second subdirect sum of two totally nonnegative matrices is considered. KW - Totally nonnegative matrix KW - Entry-wise perturbation KW - K-subdirect sum Y1 - 2017 SN - 0024-3795 SS - 0024-3795 U6 - https://doi.org/10.1016/j.laa.2016.11.001 DO - https://doi.org/10.1016/j.laa.2016.11.001 N1 - Volltextzugriff für Angehörige der Hochschule Konstanz möglich. VL - 2017 IS - 514 SP - 222 EP - 233 ER -