We prove in ZFC that there is a set and a surjective function H: A → ⟨0,1⟩ such that for every null additive set X ⊆ ⟨0,1), is null additive in . This settles in the affirmative a question of T. Bartoszyński.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ba62-1-1, author = {Tomasz Weiss}, title = {Addendum to ``On Meager Additive and Null Additive Sets in the Cantor space $2^{$\omega$}$ and in $\mathbb{R}$'' (Bull. Polish Acad. Sci. Math. 57 (2009), 91-99)}, journal = {Bulletin of the Polish Academy of Sciences. Mathematics}, volume = {62}, year = {2014}, pages = {1-9}, zbl = {1188.03030}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba62-1-1} }
Tomasz Weiss. Addendum to “On Meager Additive and Null Additive Sets in the Cantor space $2^{ω}$ and in ℝ” (Bull. Polish Acad. Sci. Math. 57 (2009), 91-99). Bulletin of the Polish Academy of Sciences. Mathematics, Tome 62 (2014) pp. 1-9. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba62-1-1/