Laan, Gerard van der; Talman, Dolf; Yang, Zaifu - Tinbergen Instituut - 2007
, 391-407. <p> Tucker's well-known combinatorial lemma states that for any given symmetric triangulation of the n …-dimensional unit cube and for any integer labeling that assigns to each vertex of the triangulation a label from the set {1,2,...n,-1 …,-2,....-n} with the property that antipodal vertices on the boundary of the cube are assigned opposite labels, the triangulation …