in Proceedings of EuroCG, Berlin, M¨arz 2001, pp. 142–145. [14] Branched coverings, triangulations, and 3-manifolds, (mit Ivan Izmestiev). Adv. Geometry, 3:191–225, 2003. [15]...
For general polytopes, it has turned out that with respect to many questions it su ces to consider only the simple polytopes, i.e., d-dimensional polytopes where every vertex is c...
We show how the flag f -vector of a polytope changes when cutting off any face, generalizing work of Lee for simple polytopes. The result is in terms of explicit linear operators o...
Richard Ehrenborg, D. Johnston, R. Rajagopalan, Ma...