%0 Journal Article %A Katarzyna Osiak %T The Boolean space of higher level orderings %J Fundamenta Mathematicae %D 2007 %P 101-117 %V 196 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm196-2-1/ %R 10.4064/fm196-2-1 %G en %F 10_4064_fm196_2_1