A characterization of the meager ideal

Commentationes mathematicae Universitatis Carolinae

Piotr Zakrzewski¹ 

关键词: Polish group;    $\sigma $-ideal;    meager sets;   

DOI  :  10.14712/1213-7243-015.104

学科分类：物理化学和理论化学

来源: Univerzita Karlova v Praze * Matematicko-Fyzikalni Fakulta / Charles University in Prague, Faculty of Mathematics and Physics

【 摘 要 】

We give a classical proof of the theorem stating that the $\sigma $-ideal of meager sets is the unique $\sigma $-ideal on a Polish group, generated by closed sets which is invariant under translations and ergodic.

【 授权许可】

CC BY