Akademik
non-negative
adjective
a)
Of a
real number
,
either
positive
or
zero
;
not
negative
; greater than or equal to zero.
Distances are non-negative.
b)
Of a
real valued
function
,
functional
, etc. which has non-negative values over a particular
domain
D.
For all ,
Ant
:
negative
Wikipedia foundation
.