Automorphisms of Chevalley groups of type $F_4$ over local rings with 1/2

Details Automorphisms of Chevalley groups of type $F_4$ over local rings with 1/2 Automorphisms of Chevalley groups of type $F_4$ over local rings with 1/2

2009-07-31

arxiv.org/abs/0907.5592v1

Mathematics

Group Theory

23 pages

Scientific paper

In the paper we prove that every automorphism of a Chevalley group of type
$F_4$ over a commutative local ring with~1/2 is standard, i. e., it is a
composition of ring and inner automorphisms.

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