Another Proof of the Nowicki Conjecture

IF 0.4 4区 数学 Q4 MATHEMATICS Tokyo Journal of Mathematics Pub Date : 2019-02-23 DOI:10.3836/tjm/1502179320
V. Drensky
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引用次数: 5

Abstract

Let $K[X_d,Y_d]=K[x_1,\ldots,x_d,y_1,\ldots,y_d]$ be the polynomial algebra in $2d$ variables over a field $K$ of characteristic 0 and let $\delta$ be the derivation of $K[X_d,Y_d]$ defined by $\delta(y_i)=x_i$, $\delta(x_i)=0$, $i=1,\ldots,d$. In 1994 Nowicki conjectured that the algebra $K[X_d,Y_d]^{\delta}$ of constants of $\delta$ is generated by $X_d$ and $x_iy_j-y_ix_j$ for all $1\leq i
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Nowicki猜想的另一个证明
设$K[X_d,Y_d]=K[X_1,\ldots,X_d,Y_1,\lots,Y_d]$是特征为0的字段$K$上的$2d$变量中的多项式代数,设$\delta$是由$\delta(Y_i)=X_i$,$\delda(X_i)=0$,$i=1,\ldts,d$定义的$K[X_d,Y_d]$的导数。1994年,Nowicki推测$\delta$的常数的代数$K[X_d,Y_d]^{\delta}$是由$X_d$和$X_iy_j-Y_ix_j$对所有$1\leq i<j\leq d$生成的。几位作者用不同的观点给出了肯定的答案。本文基于广义线性群$GL_2(K)$的表示理论,给出了该猜想的另一个证明。
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来源期刊
CiteScore
0.70
自引率
16.70%
发文量
27
审稿时长
>12 weeks
期刊介绍: The Tokyo Journal of Mathematics was founded in 1978 with the financial support of six institutions in the Tokyo area: Gakushuin University, Keio University, Sophia University, Tokyo Metropolitan University, Tsuda College, and Waseda University. In 2000 Chuo University and Meiji University, in 2005 Tokai University, and in 2013 Tokyo University of Science, joined as supporting institutions.
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