On compactifications of discrete spaces
Fundamentalʹnaâ i prikladnaâ matematika, Tome 2 (1996) no. 3, pp. 803-848
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Some types of points of Stone–Cech compactifications of countable and uncountable spaces are considered, such as weak $p$-points, matrix points, 0-points. Method of obtaning of these points by using of linked and independent matrices is given. Some new types of weak $p$-points are obtained by using subsets with countable Souslin number.