Division algebras in linear Gr-categories

作者:Huang Hua Lin*; Van Oystaeyen Fred; Zhang Yinhuo
来源:Bulletin of the Belgian Mathematical Society Simon Stevin, 2014, 21(5): 859-872.

摘要

We study division algebras in an arbitrary linear Gr-category, i.e., a category of finite-dimensional vector spaces graded by a group with associativity constraint given by a 3-cocycle. When the 3-cocycle is non-coboundary, this provides some interesting classes of nonassociative division algebras. In particular, when we work on Gr-categories over the field of real numbers, some quasi-associative version of the quaternions and octonions appear.