English

Asymptotic primes and the Chow group

Commutative Algebra 2015-12-17 v1

Abstract

In this paper we present an unexpected connection between the theory of asymptotic prime divisors and Chow groups. As an application we show that the Chow group A1(R)A_1(R) is a torsion group when RR is any graded ring such that we have an inclusion of graded rings TRST \subseteq R \subseteq S where S=k[X1,X2,Y]/(X1m+X2m+Yn)S = k[X_1, X_2, Y]/(X_1^m + X_2^m + Y^n) where kk is algebraically field, (m,n)=1(m,n) = 1, (mn)1k(mn)^{-1} \in k, m,n2m, n \geq 2. We consider SS graded with deg X1=deg X2=ndeg \ X_1 = deg \ X_2 = n and deg Y=mdeg \ Y = m. Also T=k[X1,X2]T = k[X_1, X_2] where deg X1=deg X2=ndeg \ X_1 = deg \ X_2 = n. We also consider higher dimensional analogues of this result.

Keywords

Cite

@article{arxiv.1512.05107,
  title  = {Asymptotic primes and the Chow group},
  author = {Tony J. Puthenpurakal},
  journal= {arXiv preprint arXiv:1512.05107},
  year   = {2015}
}