%0 Journal Article %A Dow, Alan %A Shelah, Saharon %T Asymmetric tie-points and almost clopen subsets of $\mathbb {N}^*$ %J Commentationes Mathematicae Universitatis Carolinae %D 2018 %P 451-466 %V 59 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.268/ %R 10.14712/1213-7243.2015.268 %G en %F 10_14712_1213_7243_2015_268