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Unipotent Overgroups in Simple Algebraic Groups
[chapter]
2014
Groups of Exceptional Type, Coxeter Groups and Related Geometries
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In this article we survey recent results on the structure of centers of centralizers of unipotent elements u in simple linear algebraic groups G. We bring forth the case of bad characteristic treated by the first author as well as a new case-free proof in characteristic 0 of the second author giving a lower bound for the dim Z(CG(u)) in case u is an even element. We also point out properties of the group Z(CG(u) • ).
doi:10.1007/978-81-322-1814-2_8
fatcat:xcy3nicvvvesbabju3p6m3awti