Centers for the restricted category O at the critical level over affine Kac-Moody algebras
classification
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categoryrestrictedaffinecriticaldeformedkac-moodylevelalgebra
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The restricted category O at the critical level over an affine Kac-Moody algebra is a certain subcategory of the ordinary BGG-category O. We study a deformed version introduced by Arakawa and Fiebig and calculate the center of the deformed restricted category O.
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