Small-large subgroups of the reals

31 May 2016  ·  Roslanowski Andrzej, Shelah Saharon ·

We are interested in subgroups of the reals that are small in one and large in another sense. We prove that, in ZFC, there exists a non-meager Lebesgue null subgrooup of R, while it isconsistent there there is no non-null meager subgroup of R...

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