The ideal determined by the unsymmetric game

Newelski, L.; Rosłanowski, A.

doi:10.1090/S0002-9939-1993-1112500-6

The ideal determined by the unsymmetric game
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by L. Newelski and A. Rosłanowski PDF

Proc. Amer. Math. Soc. 117 (1993), 823-831 Request permission

Abstract:

In the present paper we study the ideal of all subsets of ${\mathcal {X}^\omega }$ for which the second player has a winning strategy in the unsymmetric game. We describe its cardinal coefficients and the notions of forcing determined by it.

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