Algebra Seminar talk

Diego A. Mejía

We present the ideals $I_f$ (parametrized by an increasing function $f$) which were introduced by Yorioka for his proof of CON( cof(SN) > $\mathfrak 2^{\aleph_0}$) (SN= the ideal of strong measure zero sets).

Motivated by work of Kamo and Osuga, we present ZFC results and consistency results about the ideals associated to $I_f$.

(This is the topic of Miguel Cardona's Master thesis at Universidad Nacional de Colombia.)