Geodesic
On existence of the identity element in a semigroup
Matematički vesnik, Tome 17 (1965) no. 2, p. 155 .

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

Classification : 20M99 
@article{MV_1965_17_2_a9,
     author = {S. Lajos},
     title = {On existence of the identity element in a semigroup},
     journal = {Matemati\v{c}ki vesnik},
     pages = {155 },
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1965},
     url = {http://geodesic.mathdoc.fr/item/MV_1965_17_2_a9/}
}
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S. Lajos. On existence of the identity element in a semigroup. Matematički vesnik, Tome 17 (1965) no. 2, p. 155 . http://geodesic.mathdoc.fr/item/MV_1965_17_2_a9/