The minimal right $A$-ideal of the free semigroup on a countable set
Mathematica slovaca, Tome 32 (1982) no. 3, pp. 301-304
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@article{MASLO_1982__32_3_a10,
author = {\v{S}ulka, Robert},
title = {The minimal right $A$-ideal of the free semigroup on a countable set},
journal = {Mathematica slovaca},
pages = {301--304},
publisher = {mathdoc},
volume = {32},
number = {3},
year = {1982},
mrnumber = {670007},
zbl = {0493.20045},
language = {en},
url = {http://geodesic.mathdoc.fr/item/MASLO_1982__32_3_a10/}
}
Šulka, Robert. The minimal right $A$-ideal of the free semigroup on a countable set. Mathematica slovaca, Tome 32 (1982) no. 3, pp. 301-304. http://geodesic.mathdoc.fr/item/MASLO_1982__32_3_a10/