%0 Journal Article %A Izhar Oppenheim %T Property (T) for groups acting on simplicial complexes through taking an “average” of Laplacian eigenvalues %J Groups, geometry, and dynamics %D 2015 %P 1131-1152 %V 9 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4171/ggd/336/ %R 10.4171/ggd/336 %F 10_4171_ggd_336