TY - JOUR AU - Dow, Alan AU - Shelah, Saharon TI - Asymmetric tie-points and almost clopen subsets of $\mathbb {N}^*$ JO - Commentationes Mathematicae Universitatis Carolinae PY - 2018 SP - 451 EP - 466 VL - 59 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.2015.268/ DO - 10.14712/1213-7243.2015.268 LA - en ID - 10_14712_1213_7243_2015_268 ER -