Nilpotent commuting varieties of reductive Lie algebras

@inproceedings{Premet1967NilpotentCV,
  title={Nilpotent commuting varieties of reductive Lie algebras},
  author={Alexander Premet},
  year={1967}
}
  • Alexander Premet
  • Published 1967
Let G be a connected reductive algebraic group over an algebraically closed field k of characteristic p ≥ 0, and g = Lie G. In positive characteristic, suppose in addition that p is good for G and the derived subgroup of G is simply connected. LetN = N (g) denote the nilpotent variety of g, and C(g) := {(x, y) ∈ N × N | [x, y] = 0}, the nilpotent commuting variety of g. Our main goal in this paper is to show that the variety C(g) is equidimensional. In characteristic 0, this confirms a… CONTINUE READING

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