%0 Journal Article
%T A proof of Bjorner's totally nonnegative conjecture
%A Michael Bjorklund
%A Alexander Engstrom
%J Mathematics
%D 2006
%I arXiv
%X The McMullen Correspondence gives a linear dependence between M-sequences of length |d/2|+1 and f-vectors of simplical d-polytopes. Denote the transfer matrix between g and f by M_d. Recently, Bjorner proved that any 2x2-minor of M_d is nonnegative and conjectured that the same would be true for arbitrary minors. In this paper we answer the question in the affirmative.
%U http://arxiv.org/abs/math/0612332v1