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math.AG2019
Nilpotent orbits of height 2 and involutions in the affine Weyl group
Jacopo Gandini, Pierluigi Moseneder Frajria, Paolo Papi
Let G be an almost simple group over an algebraically closed field k of characteristic zero, let g be its Lie algebra and let B be a Borel subgroup of G. Then B acts with finitely…
math.AG2018
The Bruhat order on abelian ideals of Borel subalgebras
Jacopo Gandini, Andrea Maffei, Pierluigi Moseneder Frajria +1
Let G be a quasi simple algebraic group over an algebraically closed field k whose characteristic is not very bad for G, and let B be a Borel subgroup of G with Lie algebra b. Give…