Geodesic
Free groups in ßN which miss the minimal ideal.
Semigroup forum, Tome 37 (1988) no. 1, pp. 233-240.

Voir la notice de l'article provenant de la source European Digital Mathematics Library

Mots-clés : Stone-Cech compactification, minimal ideal, idempotents 
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     author = {Amha Tume Lisan},
     title = {Free groups in {{\ss}N} which miss the minimal ideal.},
     journal = {Semigroup forum},
     pages = {233--240},
     publisher = {mathdoc},
     volume = {37},
     number = {1},
     year = {1988},
     zbl = {0652.22003},
     url = {http://geodesic.mathdoc.fr/item/SF_1988__37_1_134927/}
}
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Amha Tume Lisan. Free groups in ßN which miss the minimal ideal.. Semigroup forum, Tome 37 (1988) no. 1, pp. 233-240. http://geodesic.mathdoc.fr/item/SF_1988__37_1_134927/