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

Prelegent(ci)

Tomasz Weiss

Afiliacja

Cardinal Stefan Wyszyński University in Warsaw

Język referatu

angielski

Termin

20 listopada 2024 16:15

Pokój

p. 5050

Seminarium

Seminarium „Topologia i teoria mnogości”

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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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