Towers are universally measure zero and always of first category

Szymon Plewik
1993 Proceedings of the American Mathematical Society  
We improve a few known results about universally measure zero and always of first category sets. Our main tool is the fact that any tower with respect to a Borel relation is such a set.
doi:10.1090/s0002-9939-1993-1152287-4 fatcat:mn3zuuu4mzfgvctedzungwyqxi