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Thin Simplices via Modular Arithmetic

5 Apr 2024arXiv:2404.03975links table onlyarchive 2025-07-28

Vadym Kurylenko

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The local h^*-polynomial is a natural invariant of a lattice polytope appearing in Ehrhart theory and Hodge theory. In this work, we study the question posed in [GKZ94] concerning the classification of lattice simplices with vanishing local h^*-polynomial. Such simplices are called thin. We relate this question to linear codes and hyperplane arrangements over finite rings. This allows us to obtain a complete classification of the $4$-dimensional thin simplices, extending the previously known results in dimensions up to $3$.

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