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. (C) 2010 Elsevier Inc. All rights reserved.
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Tashkent Univ Informat Technol, Amir Temur St, Tashkent 100200, UzbekistanTashkent Univ Informat Technol, Amir Temur St, Tashkent 100200, Uzbekistan