%0 Journal Article %A Franco-Filho, Antonio de Padua %T Topological characterization of the small cardinal $i$ %J Commentationes Mathematicae Universitatis Carolinae %D 2003 %P 745-750 %V 44 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2003__44_4_a18/ %G en %F CMUC_2003__44_4_a18