In the paper, we study algebras having $n$ bilinear multiplication operations $\boxed{s}\colon A\times A\to A$, $s=1,\dots,n$, such that $(a\mathbin{\boxed{s}}b)\mathbin{\boxed{r}}c= a\mathbin{\boxed{s}}(b\mathbin{\boxed{r}}c)$, $s,r=1,\dots,n$, $a,b,c\in A$. The radical of such an algebra is defined as the intersection of the annihilators of irreducible $A$-modules, and it is proved that the radical coincides with the intersection of the maximal right ideals each of which is $s$-regular for some operation $\boxed{s}$ . This implies that the quotient algebra by the radical is semisimple. If an $n$-tuple algebra is Artinian, then the radical is nilpotent, and the semisimple Artinian $n$-tuple algebra is the direct sum of two-sided ideals each of which is a simple algebra. Moreover, in terms of sandwich algebras, we describe a finite-dimensional $n$-tuple algebra $A$, over an algebraically closed field, which is a simple $A$-module.
@article{MZM_2014_96_1_a3,
author = {N. A. Koreshkov},
title = {Associative $n${-Tuple} {Algebras}},
journal = {Matemati\v{c}eskie zametki},
pages = {36--50},
year = {2014},
volume = {96},
number = {1},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/MZM_2014_96_1_a3/}
}
TY - JOUR
AU - N. A. Koreshkov
TI - Associative $n$-Tuple Algebras
JO - Matematičeskie zametki
PY - 2014
SP - 36
EP - 50
VL - 96
IS - 1
UR - http://geodesic.mathdoc.fr/item/MZM_2014_96_1_a3/
LA - ru
ID - MZM_2014_96_1_a3
ER -
N. A. Koreshkov. Associative $n$-Tuple Algebras. Matematičeskie zametki, Tome 96 (2014) no. 1, pp. 36-50. http://geodesic.mathdoc.fr/item/MZM_2014_96_1_a3/
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