Extending the ideal of nowhere dense subsets of rationals to a P-ideal
Commentationes Mathematicae Universitatis Carolinae, Tome 54 (2013) no. 3, pp. 429-435
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We show that the ideal of nowhere dense subsets of rationals cannot be extended to an analytic P-ideal, $F_\sigma$ ideal nor maximal P-ideal. We also consider a problem of extendability to a non-meager P-ideals (in particular, to maximal P-ideals).
We show that the ideal of nowhere dense subsets of rationals cannot be extended to an analytic P-ideal, $F_\sigma$ ideal nor maximal P-ideal. We also consider a problem of extendability to a non-meager P-ideals (in particular, to maximal P-ideals).
Classification :
40A05, 40A35, 54D35, 54D80, 54G10
Keywords: P-ideal; nowhere dense set; extension; analytic ideal; maximal ideal; meager ideal; ideal convergence
Keywords: P-ideal; nowhere dense set; extension; analytic ideal; maximal ideal; meager ideal; ideal convergence
@article{CMUC_2013_54_3_a8,
author = {Filip\'ow, Rafa{\l} and Mro\.zek, Nikodem and Rec{\l}aw, Ireneusz and Szuca, Piotr},
title = {Extending the ideal of nowhere dense subsets of rationals to a {P-ideal}},
journal = {Commentationes Mathematicae Universitatis Carolinae},
pages = {429--435},
year = {2013},
volume = {54},
number = {3},
language = {en},
url = {http://geodesic.mathdoc.fr/item/CMUC_2013_54_3_a8/}
}
TY - JOUR AU - Filipów, Rafał AU - Mrożek, Nikodem AU - Recław, Ireneusz AU - Szuca, Piotr TI - Extending the ideal of nowhere dense subsets of rationals to a P-ideal JO - Commentationes Mathematicae Universitatis Carolinae PY - 2013 SP - 429 EP - 435 VL - 54 IS - 3 UR - http://geodesic.mathdoc.fr/item/CMUC_2013_54_3_a8/ LA - en ID - CMUC_2013_54_3_a8 ER -
%0 Journal Article %A Filipów, Rafał %A Mrożek, Nikodem %A Recław, Ireneusz %A Szuca, Piotr %T Extending the ideal of nowhere dense subsets of rationals to a P-ideal %J Commentationes Mathematicae Universitatis Carolinae %D 2013 %P 429-435 %V 54 %N 3 %U http://geodesic.mathdoc.fr/item/CMUC_2013_54_3_a8/ %G en %F CMUC_2013_54_3_a8
Filipów, Rafał; Mrożek, Nikodem; Recław, Ireneusz; Szuca, Piotr. Extending the ideal of nowhere dense subsets of rationals to a P-ideal. Commentationes Mathematicae Universitatis Carolinae, Tome 54 (2013) no. 3, pp. 429-435. http://geodesic.mathdoc.fr/item/CMUC_2013_54_3_a8/