%0 Journal Article %A Janoš, Ludvík %T The Banach contraction mapping principle and cohomology %J Commentationes Mathematicae Universitatis Carolinae %D 2000 %P 605-610 %V 41 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_2000__41_3_a15/ %G en %F CMUC_2000__41_3_a15