Revisiting the Huber-Strassen minimax theorem for capacities

We revisit the abstract minimax theorem of Huber and Strassen (1973, 1974) with the goal of removing the weak compactness condition. To do so, we require different topological conditions: we take E to be a locally compact space for which every open set is a K_σ (i.e., a countable union of compacts). We point out that a regular, 2-alternating Choquet capacity can be extended to the one-point compactification E´ of E with the point at infinity in such a manner that the Huber-Strassen construction of a least favourable pair applies to the compactified space