%0 Journal Article %A Leonid Gurvits %T A short proof, based on mixed volumes, of Liggett's theorem on the convolution of ultra-logconcave sequences %J The electronic journal of combinatorics %D 2009 %V 16 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/243/ %R 10.37236/243 %F 10_37236_243