Weighted Veronese Rings via Convex Semigroups
Commutative Algebra
2026-03-16 v1 Algebraic Geometry
Abstract
We determine properties of two-dimensional normal affine semigroup rings, and in particular of weighted Veronese rings, including determinantal presentation, Gr\"obner basis, graded Hilbert series and graded Betti numbers, the structure of their associated graded rings, and their Koszul property. We give examples in higher dimensions illustrating that the first and last properties may fail. Our approach leverages convex monomial ideals as introduced in Herzog-Qureshi-Saem(2019), which give rise to convex semigroups.
Cite
@article{arxiv.2603.12441,
title = {Weighted Veronese Rings via Convex Semigroups},
author = {Bek Chase and Luca Fiorindo and Thiago Holleben and Emanuela Marangone and Thai Thanh Nguyen and Alexandra Seceleanu and Srishti Singh},
journal= {arXiv preprint arXiv:2603.12441},
year = {2026}
}