Ultrafilters on a discrete set with two binary operations.
Lisan, A.T.
Semigroup forum, Tome 43 (1991), p. 77-82 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1991-01-01
EUDML-ID : urn:eudml:doc:135097 
@article{GDZPPN001261118,
     title = {Ultrafilters on a discrete set with two binary operations.},
     journal = {Semigroup forum},
     volume = {43},
     year = {1991},
     pages = {77-82},
     zbl = {0723.22003},
     url = {http://dml.mathdoc.fr/item/GDZPPN001261118}
}

Lisan, A.T. Ultrafilters on a discrete set with two binary operations.. Semigroup forum, Tome 43 (1991) pp. 77-82. http://gdmltest.u-ga.fr/item/GDZPPN001261118/