Let I denote the null/meager ideal on reals. Is it consistent that for any pair of non null/meager sets A and B, there is a null/meager preserving bijection between A and B? In particular, is this true in the model obtained by adding $\omega_2$ Cohen/random reals over a model of CH?
2026-03-28 06:40:13.1774680013
Restrictions of null/meager ideal
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