A quantity 
,
which may be written with an explicit plus sign for
emphasis, 
.
Positive
See also
Negative, Nonnegative, Plus Sign, Positive Integer, Positive Matrix, ZeroExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Positive." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Positive.html