The ideal (a) is not Gδ generated
Marta Frankowska ; Andrzej Nowik
Colloquium Mathematicae, Tome 122 (2011), p. 7-14 / Harvested from The Polish Digital Mathematics Library
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We prove that the ideal (a) defined by the density topology is not Gδ generated. This answers a question of Z. Grande and E. Strońska.

Publié le : 2011-01-01
EUDML-ID : urn:eudml:doc:284307 
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     author = {Marta Frankowska and Andrzej Nowik},
     title = {The ideal (a) is not $G\_$\delta$$ generated},
     journal = {Colloquium Mathematicae},
     volume = {122},
     year = {2011},
     pages = {7-14},
     zbl = {1258.03061},
     language = {en},
     url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm125-1-2}
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Marta Frankowska; Andrzej Nowik. The ideal (a) is not $G_δ$ generated. Colloquium Mathematicae, Tome 122 (2011) pp. 7-14. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-cm125-1-2/