Nonpolytopal nonsimplicial lattice spheres with nonnegative toric g-vector

preprint2012arXivOpen access

Abstract

We construct many nonpolytopal nonsimplicial Gorenstein* meet semi-lattices with nonnegative toric g-vector, supporting a conjecture of Stanley. These are formed as Bier spheres over the face posets of multiplexes, polytopes constructed by Bisztriczky as generalizations of simplices.

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