Positive Linear Functional

In mathematics, especially in functional analysis, a positive linear functional on an ordered vector space (V, ≤) is a linear functional f on V so that for all positive elements v of V, that is v≥0, it holds that

In other words, a positive linear functional is guaranteed to take nonnegative values for positive elements. The significance of positive linear functionals lies in results such as Riesz representation theorem.

Read more about Positive Linear Functional:  Examples

Famous quotes containing the words positive and/or functional:

    The oaks, how subtle and marine!
    Bearded, and all the layered light
    Above them swims; and thus the scene,
    Recessed, awaits the positive night.
    Robert Penn Warren (1905–1989)

    Indigenous to Minnesota, and almost completely ignored by its people, are the stark, unornamented, functional clusters of concrete—Minnesota’s grain elevators. These may be said to express unconsciously all the principles of modernism, being built for use only, with little regard for the tenets of esthetic design.
    —Federal Writers’ Project Of The Wor, U.S. public relief program (1935-1943)