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arXiv 1102.0362math.RA
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一般域上代数的Kurosh问题

On the Kurosh problem for algebras over a general field

Jason P. Bell, Alexander A. Young

摘要:

Smoktunowicz、Lenagan和第二位作者最近给出了一个零代数的例子,该代数的Gelfand-Kirillov维数至多为3。然而,它们的构造需要一个可数的基域。证明了对任意域$k$和超多项式但次指数增长的单调增函数$f(n)$,存在一个无限维非线性生成的零$k$ -代数,其增长渐近有界于$f(n)$ .这种构造给出了不可数域上次指数增长的诣零代数的第一个例子。

英文摘要:

Smoktunowicz, Lenagan, and the second-named author recently gave an example of a nil algebra of Gelfand-Kirillov dimension at most three. Their construction requires a countable base field, however. We show that for any field $k$ and any monotonically increasing function $f(n)$ which grows super-polynomially but subexponentially there exists an infinite-dimensional finitely generated nil $k$-algebra whose growth is asymptotically bounded by $f(n)$. This construction gives the first examples of nil algebras of subexponential growth over uncountable fields.

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