Abstract
In this paper, we prove that every element of the linear group GL14(R) normalizing the Chevalley group of type G2 over a commutative local ring R without 1/2 belongs to this group up to some multiplier. This allows us to improve our classification of automorphisms of these Chevalley groups showing that an automorphism-conjugation can be replaced by an inner automorphism. Therefore, it is proved that every automorphism of a Chevalley group of type G2 over a local ring without 1/2 is a composition of a ring and an inner automorphisms.
Original language | English |
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Pages (from-to) | 57-62 |
Number of pages | 6 |
Journal | Fundamental and Applied Mathematics |
Volume | 18 |
Issue number | 1 |
State | Published - 2013 |