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- W4310895511 abstract "The nilpotent bicone of a finite dimensional complex reductive Lie algebra g is the subset of elements in g x g whose subspace generated by the components is contained in the nilpotent cone of g. The main result of this note is that the nilpotent bicone is a complete intersection. This affirmatively answers a conjecture of Kraft-Wallach concerning the nullcone. In addition, we introduce and study the characteristic submodule of g. The properties of the nilpotent bicone and the characteristic submodule are known to be very important for the understanding of the commuting variety and its ideal of definition. In order to study the nilpotent bicone, we introduce another subvariety, the principal bicone. The nilpotent bicone, as well as the principal bicone, are linked to jet schemes. We study their dimensions using arguments from motivic integration. Namely, we follow methods developed in http://arxiv.org/abs/math/0008002v5 ." @default.
- W4310895511 created "2022-12-20" @default.
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- W4310895511 date "2007-05-18" @default.
- W4310895511 modified "2023-10-12" @default.
- W4310895511 title "Nilpotent bicone and characteristic submodule of a reductive Lie algebra" @default.
- W4310895511 doi "https://doi.org/10.48550/arxiv.0705.2685" @default.
- W4310895511 hasPublicationYear "2007" @default.
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