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Guanxi Li

Publications and source records attributed to Guanxi Li.

2 recordsLinked to original sources
arXiv2025

Segre Class of Schemes with Regularly Embedded Components

We generalize Fulton's Residual Intersection Theorem for the Segre class and express the Segre classes of schemes with regularly embedded components in terms of the Chern classes of the normal bundles to the components and their intersections. More specifically, we provide formulas for the following situations: when the components of the scheme intersect transversely and when the ideal sheaf of the scheme, after the blowup along a component, is the product of the ideal sheaves of the exceptional divisor and the residual scheme.

math.AG↗
arXiv2025

The Adjoint Polynomial of a Polyhedral Cone is a Covolume Polynomial

In this paper, we showed that the adjoint polynomial of a polyhedral cone equals the multidegree polynomial of the toric ideal with multigrading, both given by the vertex rays. This fact implies a conjecture of Aluffi, to the effect that the adjoint polynomial of a polyhedral cone in the positive orthant is a covolume polynomial.

math.AC↗