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On β-favorability of the strong Choquet game

László Zsilinszky — 2011

Colloquium Mathematicae

In the main result, partially answering a question of Telgársky, the following is proven: if X is a first countable R₀-space, then player β (i.e. the EMPTY player) has a winning strategy in the strong Choquet game on X if and only if X contains a nonempty W δ -subspace which is of the first category in itself.

Products of Baire spaces revisited

László Zsilinszky — 2004

Fundamenta Mathematicae

Generalizing a theorem of Oxtoby, it is shown that an arbitrary product of Baire spaces which are almost locally universally Kuratowski-Ulam (in particular, have countable-in-itself π-bases) is a Baire space. Also, partially answering a question of Fleissner, it is proved that a countable box product of almost locally universally Kuratowski-Ulam Baire spaces is a Baire space.

On Baireness of the Wijsman Hyperspace

László Zsilinszky — 2007

Bollettino dell'Unione Matematica Italiana

Baireness of the Wijsman hyperspace topology is characterized for a me- trizable base space with a countable-in-itself p-base; further a separable 1st category metric space is constructed with a Baire Wijsman hyperspace.

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