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Transactions of the American Mathematical Society

Published by the American Mathematical Society, the Transactions of the American Mathematical Society (TRAN) is devoted to research articles of the highest quality in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.43.

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Isomorphisms of adjoint Chevalley groups over integral domains
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by Yu Chen PDF
Trans. Amer. Math. Soc. 348 (1996), 521-541 Request permission


It is shown that every automorphism of an adjoint Chevalley group over an integral domain containing the rational number field is uniquely expressible as the product of a ring automorphism, a graph automorphism and an inner automorphism while every isomorphism between simple adjoint Chevalley groups can be expressed uniquely as the product of a ring isomorphism, a graph isomorphism and an inner automorphism. The isomorphisms between the elementary subgroups are also found having analogous expressions.
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Additional Information
  • Yu Chen
  • Affiliation: Department of Mathematics, University of Turin, Via Carlo Alberto 10, 10123 Torino, Italy
  • Email:
  • Received by editor(s): May 2, 1994
  • Additional Notes: Supported in part by Italian M.U.R.S.T. research grant
  • © Copyright 1996 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 348 (1996), 521-541
  • MSC (1991): Primary 20G35, 20E36
  • DOI:
  • MathSciNet review: 1329529