${\cal H}$-commutative semigroups in which each homomorphism is uniquely determined by its kernel.
Tully, Edward J.
Pacific J. Math., Tome 49 (1973) no. 2, p. 669-679 / Harvested from Project Euclid
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Publié le : 1973-05-14
Classification:  20M10 
@article{1102947546,
     author = {Tully, Edward J.},
     title = {${\cal H}$-commutative semigroups in which each homomorphism is uniquely determined by its kernel.},
     journal = {Pacific J. Math.},
     volume = {49},
     number = {2},
     year = {1973},
     pages = { 669-679},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1102947546}
}

Tully, Edward J. ${\cal H}$-commutative semigroups in which each homomorphism is uniquely determined by its kernel.. Pacific J. Math., Tome 49 (1973) no. 2, pp.  669-679. http://gdmltest.u-ga.fr/item/1102947546/