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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Partially supported by the DFG in the framework of SPP 1388 and GK 1821.
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Rottmaier, M., Soergel, W. Unicity of graded covers of the category \(\mathcal{O}\) of Bernstein–Gelfand–Gelfand. Ark Mat 53, 383–400 (2015). https://doi.org/10.1007/s11512-014-0211-x
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DOI: https://doi.org/10.1007/s11512-014-0211-x