1. On $\sigma$-discrete Borel mappings via quasi-metrics Creator: Künzi, Hans-Peter A. and Wajch, Eliza Format: bez média and svazek Type: model:article and TEXT Subject: quasi-metric, continuous map, Borel map, $\sigma $-discrete map, $\sigma $-discretely decomposable family, absolutely Borel set, and absolutely analytic space Language: English Rights: http://creativecommons.org/publicdomain/mark/1.0/ and policy:public