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arXiv · 1307.7928

Topological games and productively countably tight spaces

Leandro F. Aurichi·Angelo Bella
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Abstract

The two main results of this work are the following: if a space $X$ is such that player II has a winning strategy in the game $\gone(Ω_x, Ω_x)$ for every $x \in X$, then $X$ is productively countably tight. On the other hand, if a space is productively countably tight, then $\sone(Ω_x, Ω_x)$ holds for every $x \in X$. With these results, several other results follow, using some characterizations made by Uspenskii and Scheepers.

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Leandro F. Aurichi, Angelo Bella. 2014-04-06. Topological games and productively countably tight spaces. https://arxiv.org/abs/1307.7928

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