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arXiv 0712.0833math.AC
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Noether整环中理想的射影等价

Projective equivalence of ideals in Noetherian integral domains

William J. Heinzer, Louis J. Ratliff, David E. Rush

摘要:

设I是Noether整环R中的非零真理想.本文建立了R的有限可分整扩张整环A和正整数m的存在性,使得IA的所有Rees整数都等于m.此外,若R的高度为1,则J = Rad(IA)的所有Rees整数都等于1,且理想J^m和IA具有相同的整闭包.因此,Rad(IA)= J是一个射影完全根理想,它与IA射影等价。特别地,如果R是Dedekind,则存在一个戴德金整环A,它具有以下性质:(i)A是R的有限可分整扩张;(ii)存在A的根理想J和一个正整数m使得IA = J^m。

英文摘要:

Let I be a nonzero proper ideal in a Noetherian integral domain R. In this paper we establish the existence of a finite separable integral extension domain A of R and a positive integer m such that all the Rees integers of IA are equal to m. Moreover, if R has altitude one, then all the Rees integers of J = Rad(IA) are equal to one and the ideals J^m and IA have the same integral closure. Thus Rad(IA) = J is a projectively full radical ideal that is projectively equivalent to IA. In particular, if R is Dedekind, then there exists a Dedekind domain A having the following properties: (i) A is a finite separable integral extension of R; and (ii) there exists a radical ideal J of A and a positive integer m such that IA = J^m.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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