%0 Journal Article %A Hankyung Ko %A Rafael Mrden %A Volodymyr Mazorchuk %T Some homological properties of category $\mathcal{O}$. VI %J Documenta mathematica %D 2021 %P 1237-1269 %V 26 %U http://geodesic.mathdoc.fr/articles/10.4171/dm/840/ %R 10.4171/dm/840 %F 10_4171_dm_840