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Algebraic group actions and rational singularities V. L. Popov Steklov Mathematical Institute of Russian Academy of Sciences, Moscow |
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Abstract: The talk is aimed to discuss the Kraft–Procesi problem about rationality of singularities of all normal affine orbit closures of connected reductive algebraic groups. A counterexample is given, and the affirmative answer for spherical orbit closures is obtained. Language: English |
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