An element of the σ-algebra ℬ(X) generated by the open sets of a topological space X. Tame by most measure-theoretic standards; strictly contained in Lebesgue-measurable sets (in ℝ).
An element of the σ-algebra ℬ(X) generated by the open sets of a topological space X. Tame by most measure-theoretic standards; strictly contained in Lebesgue-measurable sets (in ℝ).