%0 Journal Article %A P. Doyle %T A topological collapse number for all spaces %J Fundamenta Mathematicae %D 1975 %P 261-263 %V 89 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm-89-3-261-263/ %R 10.4064/fm-89-3-261-263 %G en %F 10_4064_fm_89_3_261_263