Title of article :
Fubini properties for filter-related σ-ideals
Author/Authors :
Zakrzewski، نويسنده , , Piotr، نويسنده ,
Issue Information :
دوماهنامه با شماره پیاپی سال 2004
Abstract :
Let MF be the σ-ideal of meager sets in the Ellentuck topology related to a filter F on the set of natural numbers. We prove that if G is a filter with the Baire property and F is an analytic, non-countably generated p-filter, then the pair 〈MG,MF〉 does not have Fubini Property. In fact, there is a Borel set on the plane such that its vertical sections are in MF and the complements of its horizontal sections are in MG. This partially answers a question of Recław [Topology Appl., submitted for publication].
Keywords :
?-Ideal , Fubini Property , Filter on ? , Ellentuck topology , Meager sets
Journal title :
Topology and its Applications
Journal title :
Topology and its Applications