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arXiv 1009.5409math.DGmath.APmath.RA
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关于R^n中极小三次锥的分类

On a classification of minimal cubic cones in R^n

Vladimir G. Tkachev

摘要:

在所谓径向特征三次锥的情况下,我们建立了三次极小锥的分类。我们的主要结果表明,任何径向本征立方要么是Clifford型本征立方无限族的成员,要么属于18个例外族之一。我们证明了18个家庭中至少有12个是非空的,并研究其代数结构。我们还建立了任何径向本征立方满足$f$的黑塞矩阵的迹恒等式$\det \mathrm{Hess}^3 (f)=αf$,其中$α\in \R{}$。本文的另一个结果是径向特征三次曲面与具有四个主曲率的等参超曲面之间的对应关系。

英文摘要:

We establish a classification of cubic minimal cones in case of the so-called radial eigencubics. Our principal result states that any radial eigencubic is either a member of the infinite family of eigencubics of Clifford type, or belongs to one of 18 exceptional families. We prove that at least 12 of the 18 families are non-empty and study their algebraic structure. We also establish that any radial eigencubic satisfies the trace identity $\det \mathrm{Hess}^3 (f)=αf$ for the Hessian matrix of $f$, where $α\in \R{}$. Another result of the paper is a correspondence between radial eigencubics and isoparametric hypersurfaces with four principal curvatures.

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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