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Automorphisms of elementary adjoint Chevalley groups of types $$A_l$$, $$D_l$$, and $$E_l$$ over local rings with $$1/2$$. (English. Russian original) Zbl 1245.20063
Algebra Logic 48, No. 4, 250-267 (2009); translation from Algebra Logika 48, No. 4, 443-470 (2009).
Summary: It is proved that every automorphism of an elementary adjoint Chevalley group of type $$A_l$$, $$D_ l$$, or $$E_l$$ over a local commutative ring with 1/2 is a composition of a ring automorphism and conjugation by some matrix from the normalizer of that Chevalley group in $$\text{GL}(V)$$ ($$V$$ is an adjoint representation space).

##### MSC:
 20H25 Other matrix groups over rings 20E36 Automorphisms of infinite groups
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##### References:
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