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arXiv 0710.0470math.ACmath.AG
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多对称函数环的一个极小生成元集

A minimal set of generators for the ring of multisymmetric functions

David Rydh

摘要:

本文的目的是对任何交换环A,给出多对称函数环TS^d_A(A[x_1,.,x_r])为A-代数。在特征零中,即当A是一个有理数上的代数时,自19世纪以来就已经知道了生成元的最小集合。一个相当小的发电机组在一般情况下最近也已由Vaccarino,但它不是最小的一般。我们还给出了一个尖锐的度界的发电机,改善度界先前获得的Fleischmann。

英文摘要:

The purpose of this article is to give, for any commutative ring A, an explicit minimal set of generators for the ring of multisymmetric functions TS^d_A(A[x_1,...,x_r]) as an A-algebra. In characteristic zero, i.e. when A is an algebra over the rational numbers, a minimal set of generators has been known since the 19th century. A rather small generating set in the general case has also recently been given by Vaccarino but it is not minimal in general. We also give a sharp degree bound on the generators, improving the degree bound previously obtained by Fleischmann.

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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