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Abstract We provide the first estimate of the number of fine, regular, star triangulations of the four-dimensional reflexive polytopes, as classified by Kreuzer and Skarke (KS). This provides an upper bound on the number of Calabi-Yau threefold hypersurfaces in toric varieties. The estimate is performed with deep learning, specifically the novel equation learner (EQL) architecture. We demonstrate that EQL networks accurately predict numbers of triangulations far beyond the h 1,1 training region, allowing for reliable extrapolation. We estimate that number of triangulations in the KS dataset is 1010,505, dominated by the polytope with the highest h 1,1 value. |
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