Some remarks on subsets of R defined in terms of the translations of sets which belong to the four most common sigma ideals in R, part II

Speaker(s)

Tomasz Weiss

Affiliation

Cardinal Stefan Wyszyński University in Warsaw

Language of the talk

English

Date

Nov. 27, 2024, 4:15 p.m.

Room

room 5050

Seminar

Topology and Set Theory Seminar

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We are interested in subsets of the Cantor space C. Assume that M denotes meager sets, N stands for null sets, M/\N is the intersection ideal, and + is the standard addition in C. We prove in the ZFC the following fact. Suppose that X is such that for every set F from M/\N,  X+F is null. Then for every F from M/\N,   X+F is meager.

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