%0 Journal Article %A Achar, Pramod %A Makisumi, Shotaro %A Riche, Simon %A Williamson, Geordie %T Koszul duality for Kac–Moody groups and characters of tilting modules %J Journal of the American Mathematical Society %D 2019 %P 261-310 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1090/jams/905/ %R 10.1090/jams/905 %F 10_1090_jams_905