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The gg-theorem in smooth approximation

Joel Hakavuori

Source record

Source: arXiv

Published: Sep 21, 2026

arXiv: 2609.24790

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Source abstract

We show that a sequence of simplicial polytopes approximating a smooth convex body has primitive Betti numbers diverging from the upper bound given by the gg-theorem. This complements a result of Adiprasito-Nevo-Samper, who proved the corresponding divergence from the lower bound. The proof uses a new lower bound for the size of the shadow of a set of monomials.

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The $g$-theorem in smooth approximation — Mathematical Frontier Network