2 search results - page 1 / 1 » A Unique "Nonnegative" Solution to an Underdetermi... |
CORR
2010
Springer
13 years 5 months ago
2010
Springer
Abstract--This paper investigates the uniqueness of a nonnegative vector solution and the uniqueness of a positive semidefinite matrix solution to underdetermined linear systems. A...
TIT
2008
13 years 7 months ago
2008
An underdetermined linear system of equations Ax = b with non-negativity constraint x 0 is considered. It is shown that for matrices A with a row-span intersecting the positive o...