For a spanning unimodular configuration A, the Minkowski sum PA + (-PA) is reflexive with a regular unimodular triangulation and PA * (-PA) is Gorenstein of index 2.
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Nef-partitions arising from unimodular configurations
For a spanning unimodular configuration A, the Minkowski sum PA + (-PA) is reflexive with a regular unimodular triangulation and PA * (-PA) is Gorenstein of index 2.