Finite-dimensional Koszul algebras admit derived Koszul dualities in bounded derived categories of modules both graded and ungraded, reconstructed via dg orbit categories, with applications to all integral blocks of category O and certain perverse sheaves.
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A Non-graded Koszul Duality and Its Applications
Finite-dimensional Koszul algebras admit derived Koszul dualities in bounded derived categories of modules both graded and ungraded, reconstructed via dg orbit categories, with applications to all integral blocks of category O and certain perverse sheaves.