Towers are universally measure zero and always of first category

Plewik, Szymon

doi:10.1090/S0002-9939-1993-1152287-4

Towers are universally measure zero and always of first category
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by Szymon Plewik

Proc. Amer. Math. Soc. 119 (1993), 865-868

DOI: https://doi.org/10.1090/S0002-9939-1993-1152287-4

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Abstract:

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.

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