%0 Journal Article %A Wei Wang %T On the 3-representations of groups and the 2-categorical traces %J Theory and applications of categories %D 2015 %P 1999-2047 %V 30 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2015_30_a55/ %G en %F TAC_2015_30_a55