Abstrakt
Internal descriptions of spaces of absolute Borel classes with respect to Tychonoff spaces are found. The case of a hierarchy of extended Borel sets in nonseparable complete metrizable spaces is also covered by the further results.
Internal descriptions of spaces of absolute Borel classes with respect to Tychonoff spaces are found. The case of a hierarchy of extended Borel sets in nonseparable complete metrizable spaces is also covered by the further results.