Automorphisms and isomorphisms of Chevalley groups and algebras
classification
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keywords
automorphismschevalleygroupringadjointalgebraalgebrasautomorphism
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An adjoint Chevalley group of rank at least 2 over a rational algebra (or a similar ring), its elementary subgroup, and the corresponding Lie ring have the same automorphism group. These automorphisms are explicitly described.
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