On the subgeneric restricted blocks of affine category O at the critical level
Peter Fiebig

TL;DR
This paper characterizes the endomorphism algebra of a projective generator within a specific subcategory of affine Kac-Moody algebra representations at the critical level, advancing understanding of category O structures.
Contribution
It explicitly determines the endomorphism algebra for a subgeneric restricted block of affine category O at the critical level, a novel result in the representation theory of affine algebras.
Findings
Explicit description of the endomorphism algebra
Identification of structure in subgeneric restricted blocks
Advancement in understanding affine category O at critical level
Abstract
We determine the endomorphism algebra of a projective generator in a subgeneric restricted block of the critical level category O over an affine Kac-Moody algebra.
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Taxonomy
TopicsAlgebraic structures and combinatorial models · Advanced Topics in Algebra · Rings, Modules, and Algebras
