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Cofinalities of Marczewski Ideals

Presented by: 
Y Khomskii Universität Hamburg
Date: 
Wednesday 26th August 2015 - 13:30 to 14:00
Venue: 
INI Seminar Room 2
Abstract: 
We study the cofinality number of sigma-ideals related to the Marczewski-ideal on the Baire and Cantor space. These ideals are not Borel-generated, and the cofinality number is usually greater than the continuum.

This is joint work with Jörg Brendle and Wolfgang Wohofsky.

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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons