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Tits construction and the Rost invariant V. A. Petrov St. Petersburg Department of Steklov Mathematical Institute of Russian Academy of Sciences |
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Abstract: Simple Lie algebras over an algebraically closed field of characteristic 0 are described by Dynkin diagrams. Over a non-closed field, the same Dynkin diagram can correspond to many simple algebras, so it is interesting to study constructions of simple Lie algebras and invariants that make it possible to recognize their isomorphism or reflect some of their properties. One such construction of exceptional (i.e., types Language: English |