Clifford algebras obtained by twisting of group algebras
โ Scribed by Helena Albuquerque; Shahn Majid
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 144 KB
- Volume
- 171
- Category
- Article
- ISSN
- 0022-4049
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โฆ Synopsis
We investigate the construction and properties of Cli ord algebras by a similar manner as our previous construction of the octonions, namely as a twisting of group algebras of Z n 2 by a cocycle. Our approach is more general than the usual one based on generators and relations. We obtain, in particular, the periodicity properties and a new construction of spinors in terms of left and right multiplication in the Cli ord algebra.
๐ SIMILAR VOLUMES
We study units of twisted group algebras. Let G be a finite group and K be a field of characteristic p > 0. Assume that K is not algebraic over a finite field. We determine when units of K t G do not contain any nonabelian free subgroup. We also discuss what will happen when G is locally finite. For
Spinor spaces can be represented as minimal left ideals of Clifford algebras and they are generated by primitive idempotents. Primitive idempotents of the Clifford algebras Rp.q are shown to be products of mutually nonannihilating commuting idempotent factors I(1 +cT), where the k = q -rq\_p basis e