2 search results - page 1 / 1 » A Unique "Nonnegative" Solution to an Underdetermi... |
CORR
2010
Springer
14 years 8 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...
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TIT
2008
14 years 10 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...