superinvolution;
Albert theorem;
Albert-Riehm theorem;
superalgebra;
simple;
central;
D O I:
10.1016/j.jalgebra.2007.10.044
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Superinvolutions on graded associative algebras constitute a source of Lie and Jordan superalgebras. Graded versions of the classical Albert and Albert-Riehm Theorems on the existence of superinvolutions are proven. Surprisingly, the existence of superinvolutions of the first kind is a rare phenomenon, as non-trivial central division superalgebras are never endowed with this kind of superinvolutions. (C) 2008 Elsevier Inc. All rights reserved.