%0 Journal Article %A Saroop Kaul %T Continuous and discrete flows and the property of $ch0^±$ %J Fundamenta Mathematicae %D 1987 %P 1-7 %V 127 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-127-1-1-7/ %R 10.4064/fm-127-1-1-7 %G en %F 10_4064_fm_127_1_1_7