%0 Journal Article %A Nikodem Mrożek %T Some Applications of the Katětov Order on Borel Ideals %J Bulletin of the Polish Academy of Sciences. Mathematics %D 2016 %P 21-28 %V 64 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ba8055-6-2016/ %R 10.4064/ba8055-6-2016 %G fr %F 10_4064_ba8055_6_2016