| Revista: | Proyecciones (Antofagasta) |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000405885 |
| ISSN: | 0716-0917 |
| Autores: | Arenas-Carmona, Luis1 |
| Instituciones: | 1Universidad de Chile, Facultad de Ciencias, Santiago de Chile. Chile |
| Año: | 2017 |
| Periodo: | Mar |
| Volumen: | 36 |
| Número: | 1 |
| Paginación: | 131-148 |
| País: | Chile |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico |
| Resumen en inglés | A representation field for a non-maximal order H in a central simple algebra is a subfield of the spinor class field of maximal orders which determines the set of spinor genera of maximal orders representing H. In our previous work we have proved the existence of the representation field for several important families of suborders, like commutative orders, while we have also found examples where the representation field fails to exist. To be precise, we have found full-rank orders, in central simple algebras of dimension 9 or larger over a suitable field, whose representation field is undefined. In this article, we prove that the representation field is defined for any order H of rank r ≤ 7. This is done by defining representation fields for arbitrary representations of orders into central simple algebra and showing that the computation of these generalized representation fields can be reduced to the case of irreducible representations. The same technique yields the existence of representation fields for any order in an algebra whose semi-simple reduction is commutative. We also construct a rank-8 order, in a 16-dimensional matrix algebra, whose representation field is not defined |
| Disciplinas: | Matemáticas |
| Palabras clave: | Matemáticas puras, Algebra, Teoría de números, Teoría algebraica de números, Teoría de clases de campos |
| Keyword: | Mathematics, Pure mathematics, Algebra, Number theory, Algebraic number theory, Class field theory |
| Texto completo: | Texto completo (Ver PDF) |
