collaborators

2 papers

math.LO1999

Filters and games

Tomek Bartoszynski, Marion Scheepers

We obtain game-theoretic characterizations for meagerness and rareness of filters on a countable set.

math.LO1999

Remarks on small sets related to trigonometric series

Tomek Bartoszynski, Marion Scheepers

We show that several classes of sets, like N_0-sets, Arbault sets, N-sets and pseudo-Dirichlet sets are closed under adding sets of small size.