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arXiv 1507.03034math.AG
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实algebraic varieties上的环面完备化与有界函数

Toric completions and bounded functions on real algebraic varieties

Daniel Plaumann, Claus Scheiderer

摘要:

给定一个半代数集S,我们研究了由嵌入到完全环面簇中而引起的S的紧化。这使得有可能描述的渐近增长的多项式函数在S的组合数据。我们延长我们以前的工作,计算环的有界函数在这种情况下,并讨论应用正多项式和矩问题。在特殊情况下得到了完整的结果,如由二项式不等式定义的集合。我们还表明,野生行为的某些例子,由克鲁格和Mondal-Netzer不能发生在一个复曲面设置。

英文摘要:

Given a semi-algebraic set S, we study compactifications of S that arise from embeddings into complete toric varieties. This makes it possible to describe the asymptotic growth of polynomial functions on S in terms of combinatorial data. We extend our earlier work to compute the ring of bounded functions in this setting and discuss applications to positive polynomials and the moment problem. Complete results are obtained in special cases, like sets defined by binomial inequalities. We also show that the wild behaviour of certain examples constructed by Krug and by Mondal-Netzer cannot occur in a toric setting.

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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