Upward Directedness of the Rudin-Keisler Ordering of $P$-Points
Laflamme, Claude
J. Symbolic Logic, Tome 55 (1990) no. 1, p. 449-456 / Harvested from Project Euclid
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Publié le : 1990-06-14
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@article{1183743305,
     author = {Laflamme, Claude},
     title = {Upward Directedness of the Rudin-Keisler Ordering of $P$-Points},
     journal = {J. Symbolic Logic},
     volume = {55},
     number = {1},
     year = {1990},
     pages = { 449-456},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1183743305}
}

Laflamme, Claude. Upward Directedness of the Rudin-Keisler Ordering of $P$-Points. J. Symbolic Logic, Tome 55 (1990) no. 1, pp.  449-456. http://gdmltest.u-ga.fr/item/1183743305/