Three-dimensional lattice polytopes with two interior lattice points
Gabriele Balletti, Alexander Kasprzyk
Abstract
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Gabriele Balletti, Alexander Kasprzyk
Abstract
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We classify the three-dimensional lattice polytopes with two interior lattice points. Up to unimodular equivalence there are 22,673,449 such polytopes. This classification allows us to verify, for this case only, a conjectural upper bound for the volume of a lattice polytope with interior points, and provides strong evidence for new conjectural inequalities on the coefficients of the Ehrhart polynomial in dimension three.
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We classify the three-dimensional lattice polytopes with two interior lattice points. Up to unimodular equivalence there are 22,673,449 such polytopes. This classification allows us to verify, for this case only, a conjectural upper bound for the volume of a lattice polytope with interior points, and provides strong evidence for new conjectural inequalities on the coefficients of the Ehrhart polynomial in dimension three.
Key concepts: Polytope, Unimodular matrix, Lattice (music), Combinatorics, Mathematics, Integer lattice, Upper and lower bounds, Geometry