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arXiv math/9904143math.AC
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数论函数环的截断

Truncations of the ring of number-theoretic functions

Jan Snellman

摘要:

研究了从正整数到某个域的所有函数的环。这个环,我们称之为\emph{the ring of number-theoretic functions},是由所有函数f组成的“截断”Γ_n的逆极限,当m > n时,f(m)=0。每个Γ_n都是一个零维生成(K)-代数,它可以表示为一个生成多项式环与一个\emph{reversely stable}单项式理想的商.利用Eliahou-Kervaire关于稳定理想的自由极小分解的描述,以及Aramova-Herzog和Peeva的一些补充论证,我们给出了Γ_n的Poincaré-Betti级数.

英文摘要:

We study the ring of all functions from the positive integers to some field. This ring, which we call \emph{the ring of number-theoretic functions}, is an inverse limit of the ``truncations'' Γ_n consisting of all functions f for which f(m)=0 whenever m > n. Each Γ_n is a zero-dimensional, finitely generated (K)-algebra, which may be expressed as the quotient of a finitely generated polynomial ring with a \emph{reversely stable} monomial ideal. Using the description of the free minimal resolution of stable ideals, given by Eliahou-Kervaire, and some additional arguments by Aramova-Herzog and Peeva, we give the Poincaré-Betti series for Γ_n.

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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