English

Uniform Symbolic Topologies in Normal Toric Rings

Commutative Algebra 2018-11-26 v2 Algebraic Geometry

Abstract

Given a normal toric algebra RR, we compute a uniform integer D=D(R)>0D = D(R) > 0 such that the symbolic power P(DN)PNP^{(D N)} \subseteq P^N for all N>0N >0 and all monomial primes PP. We compute the multiplier DD explicitly in terms of the polyhedral cone data defining RR. In this toric setting, we draw a connection with the F-signature of RR in positive characteristic.

Keywords

Cite

@article{arxiv.1706.06576,
  title  = {Uniform Symbolic Topologies in Normal Toric Rings},
  author = {Robert M. Walker},
  journal= {arXiv preprint arXiv:1706.06576},
  year   = {2018}
}

Comments

10 pages, down from 12 pages in Version 1. Author info corrected. Substantial overhaul of all sections of the paper for efficient and clear exposition: significant improvements to the generality of select results; in particular, several results have been replaced or otherwise removed. Content of Sections 3 and 4 re-distributed and re-written. Segre-Veronese algebra computation added