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arXiv · 1402.1273

Unicity of graded covers of the Category $\mathcal O$ of Bernstein-Gelfand-Gelfand

Michael Rottmaier·Wolfgang Soergel
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Abstract

We show that the standard graded cover of the well-known category $\mathcal O$ of Bernstein-Gelfand-Gelfand can be characterized by its compatibility with the action of the center of the enveloping algebra.

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Michael Rottmaier, Wolfgang Soergel. 2014-02-06. Unicity of graded covers of the Category $\mathcal O$ of Bernstein-Gelfand-Gelfand. https://doi.org/10.1007/s11512-014-0211-x

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