The arc space of a toric variety

JOURNAL OF ALGEBRA

卷:278

Article

Ishii, S

关键词: arc space;    toric variety;    Nash problem;   

DOI  :  10.1016/j.jalgebra.2003.12.015

来源: Elsevier

【 摘 要 】

The Nash problem on arc families is affirmatively answered for a toric variety by Ishii and Kollar's paper which also shows the negative answer for general case. The Nash problem is one of questions about the relation between arc families and valuations. In this paper, the relation is described clearly for a toric variety. The arc space of a toric variety admits an action of the group scheme determined by the torus. Each orbit on the arc space corresponds to a lattice point in the cone and therefore corresponds to a toric valuation. The dominant relation among the orbits is described in terms of the lattice points. As a corollary, we obtain the answer to the embedded version of the Nash problem for an invariant ideal on a toric variety. (C) 2004 Elsevier Inc. All rights reserved.

【 授权许可】

Free