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arXiv · 2210.02031

Conic divisorial ideals of toric rings and applications to Hibi rings and stable set rings

Koji Matsushita
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Abstract

In the present paper, we study conic divisorial ideals of toric rings. We provide an idea to determine them and we give a description of the conic divisorial ideals of Hibi rings and stable set rings of perfect graphs by using this idea. We also characterize when Hibi rings or stable set rings are quasi-symmetric or weakly-symmetric. Moreover, by using the description of the conic divisorial ideals, we construct a non-commutative crepant resolution (NCCR) of a special family of stable set rings.

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Koji Matsushita. 2022-10-05. Conic divisorial ideals of toric rings and applications to Hibi rings and stable set rings. https://arxiv.org/abs/2210.02031

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