Nonnegative
See also
Negative, Nonnegative Integer, Nonnegative Matrix, Nonpositive, Nonzero, Positive, ZeroExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Nonnegative." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Nonnegative.html