The root system and the core of an extended affine Lie algebra

B.N. Allison ^[1] ; Y. Gao ^[2]
1. [1] University of Alberta
  
  University of Alberta
  
  Canadá
2. [2] York University (Canadá)
  
  York University (Canadá)
  
  Canadá
Localización: Selecta Mathematica, New Series, ISSN 1022-1824, Vol. 7, Nº. 2, 2001, págs. 149-212
Idioma: inglés
DOI: 10.1007/pl00001400
Enlaces
- Texto completo (pdf)
Resumen
- Extended affine Lie algebras are higher nullity generalizations of finite dimensional simple Lie algebras and affine Kac Moody Lie algebras. In this paper we completely describe the structure of the core modulo its centre and the root system for extended affine Lie algebras of type Bl(l≥3) , Cl(l≥2) , F 4 and G 2 .