%0 Journal Article %A Alan D. Taylor %T Prediction problems and ultrafilters on $\omega$ %J Fundamenta Mathematicae %D 2012 %P 111-117 %V 219 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/fm219-2-3/ %R 10.4064/fm219-2-3 %G en %F 10_4064_fm219_2_3