Hodge theory of matroids by star subdivisions

Fuente: arXiv
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Auteur principal: Hsiao, Andy
Format: Preprint
Publié: 2025
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author Hsiao, Andy
author_facet Hsiao, Andy
contents It is known that the Chow ring of a matroid satisfies the Hard Lefschetz property and Hodge Riemann relations. We provide a proof of this theorem by decomposition of the deletion operation into star subdivisions at two dimensional cones. This gives a simple combinatorial proof which avoids intersection cohomology or algebraic geometry.
format Preprint
id arxiv_https___arxiv_org_abs_2509_10909
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Hodge theory of matroids by star subdivisions
Hsiao, Andy
Combinatorics
05B35 (Primary), 52B40
It is known that the Chow ring of a matroid satisfies the Hard Lefschetz property and Hodge Riemann relations. We provide a proof of this theorem by decomposition of the deletion operation into star subdivisions at two dimensional cones. This gives a simple combinatorial proof which avoids intersection cohomology or algebraic geometry.
title Hodge theory of matroids by star subdivisions
topic Combinatorics
05B35 (Primary), 52B40
url https://arxiv.org/abs/2509.10909