Abstract
Players ONE and TWO play the following game of length ω: In the n-th inning ONE first chooses a meager subset of the real line; TWO responds with a nowhere dense set. TWO wins only if the union of TWO'S nowhere dense sets is exactly equal to the union of ONE'S first category sets. We prove that TWO has a winning strategy, even if TWO remembers only the most recent two moves each inning (Corollary 8). We show that in a closely related game, the assertion that TWO has a winning strategy depending on only the most recent two moves each inning is equivalent to a weak version of the Singular Cardinals Hypothesis (Theorem 1).
Original language | English |
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Pages (from-to) | 419-435 |
Number of pages | 17 |
Journal | Quaestiones Mathematicae |
Volume | 17 |
Issue number | 4 |
DOIs | |
State | Published - Oct 1994 |