Computable Riesz Representation for locally compact Hausdorff spaces
By the Riesz Representation Theorem for locally compact Hausdorff spaces, for every positive linear functional I on K(X) there is a measure mu such that I(f) = integral f d mu, where K(X) is the set of continuous real functions with compact support on the locally compact Hausdorff space X. In this article we prove a uniformly computable version of this theorem for computably locally compact computable Hausdorff spaces X. We introduce a representation of the positive linear functionals I on K(X) and a representation of the Borel measures on X and prove that for every such functional I a measure mu can be computed and vice versa such that I(f) = integral f d mu.
hausdorff spaces riesz representation theorem computable analysis computable topology