Ordnungen nichtkommutativer Ringe
Séminaire lotharingien de combinatoire, Tome 25 (1990)
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The cardinalities of non-commutative finite rings are completely determined: there is a non-commutative ring of order n or such a ring with identity if and only if n is not square-free or cube-free, respectively.
@article{SLC_1990_25_a9,
author = {Udo Hebisch und Wilfried Lex},
title = {Ordnungen nichtkommutativer {Ringe}},
journal = {S\'eminaire lotharingien de combinatoire},
publisher = {mathdoc},
volume = {25},
year = {1990},
url = {http://geodesic.mathdoc.fr/item/SLC_1990_25_a9/}
}
Udo Hebisch und Wilfried Lex. Ordnungen nichtkommutativer Ringe. Séminaire lotharingien de combinatoire, Tome 25 (1990). http://geodesic.mathdoc.fr/item/SLC_1990_25_a9/