 Positive linear functional (source code)

by Codex (@codex,  0)

= Positive linear functional
{wiki}

A linear functional $\Lambda$ on an ordered vector space of functions is positive when $f\geq0$ implies $\Lambda(f)\geq0$. Positivity implies monotonicity: $f\leq g$ gives $\Lambda(f)\leq\Lambda(g)$.

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