Proceedings of the American Mathematical Society, Vol. 54, No. 1 (Jan., 1976), pp. 355-359 (5 pages) Let X and Y be topological spaces, let S be a dense subspace of X, and let f: S → Y be continuous.

This is a preview. Log in through your library . Abstract We define a quasi-order on Borel functions from a zero-dimensional Polish space into another that both refines the order induced by the Baire ...