A short proof, based on mixed volumes, of Liggett's theorem on the convolution of ultra-logconcave sequences. Gurvits, Leonid — 2009 The Electronic Journal of Combinatorics [electronic only]
Van der Waerden/Schrijver-Valiant like conjectures and stable (aka hyperbolic) homogeneous polynomials: one theorem for all. Gurvits, Leonid — 2008 The Electronic Journal of Combinatorics [electronic only]