convex function in the sense of Jensen
convex function in the sense of Jensen
[¦kän‚veks ¦fəŋk·shən inthə ‚sens əv ′jen·sən] (mathematics)
A function ƒ(x) over an interval a, b such that, for any two points x1 and x2 satisfying a <>x1<>x2<>b, ƒ[(x1+ x2)/2] ≤ (1/2).[ƒ(x1) + ƒ(x2)].
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