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Quantizations of regular functions on nilpotent orbits
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We study the quantizations of the algebras of regular functions on nilpotent orbits. We show that such a quantization always exists and is unique if the orbit is birationally rigid. Further we show that, for special birationally rigid orbits, the quantization has integral central character in all cases but four (one orbit in E_7 and three orbits in E_8). We use this to complete the computation of Goldie ranks for primitive ideals with integral central character for all special nilpotent orbits but one (in E_8). Our main ingredient is results on the geometry of normalizations of the closures of nilpotent orbits by Fu and Namikawa.
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Cited by 1 Pith paper
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Special unipotent representations and the coadjoint orbit method
Special unipotent representations attached to quasi-distinguished nilpotent orbits are classified by admissible orbit data and proved unitarizable.
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