Finite binary relations have no more complexity than finite semigroups.
Rhodes, John
Semigroup forum, Tome 7 (1974), p. 92-103 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1974-01-01
EUDML-ID : urn:eudml:doc:134004 
@article{GDZPPN001249495,
     title = {Finite binary relations have no more complexity than finite semigroups.},
     journal = {Semigroup forum},
     volume = {7},
     year = {1974},
     pages = {92-103},
     zbl = {0294.20057},
     url = {http://dml.mathdoc.fr/item/GDZPPN001249495}
}

Rhodes, John. Finite binary relations have no more complexity than finite semigroups.. Semigroup forum, Tome 7 (1974) pp. 92-103. http://gdmltest.u-ga.fr/item/GDZPPN001249495/