Union and symmetry preserving homomorphisms of semigroups of closed relations.
Magill, K.D. jr. ; Yamamuro, S.
Semigroup forum, Tome 2 (1971), p. 168-172 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1971-01-01
EUDML-ID : urn:eudml:doc:133859 
@article{GDZPPN001247921,
     title = {Union and symmetry preserving homomorphisms of semigroups of closed relations.},
     journal = {Semigroup forum},
     volume = {2},
     year = {1971},
     pages = {168-172},
     zbl = {0247.20075},
     url = {http://dml.mathdoc.fr/item/GDZPPN001247921}
}

Magill, K.D. jr.; Yamamuro, S. Union and symmetry preserving homomorphisms of semigroups of closed relations.. Semigroup forum, Tome 2 (1971) pp. 168-172. http://gdmltest.u-ga.fr/item/GDZPPN001247921/