%0 Journal Article %A Eva Viehmann %T Truncations of level $1$ of elements in the loop group of a reductive group %J Annals of mathematics %D 2014 %P 1009-1040 %V 179 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2014.179.3.3/ %R 10.4007/annals.2014.179.3.3 %G en %F 10_4007_annals_2014_179_3_3