Unrestricted.2016-11-142011-02-182016-11-141974-12http://hdl.handle.net/2346/11093The purpose of this paper is to present generalizations for some of the Horn-Steinberg theorems given in [6] by considering the case of a singular matrix and its subunitary part. We also investigate other properties of subunitary matrices.application/pdfengMatricesDissertation