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arXiv 2101.03586math.DG
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关于空间型的常曲率子流形

On constant curvature submanifolds of space forms

M. Dajczer, C. -R. Onti, Th. Vlachos

摘要:

我们证明了E. Cartan和J.D.摩尔设$f\colon M^n_c\to\Q^{n+p}_{\tilde c}$是具有常截面曲率的黎曼流形$c$到曲率为$\tilde c$的空间型中的等距浸入,且没有弱脐点,如果$c>\tilde{c}$ .我们证明了$f$的实质余维是$p=n-1$,如果,如Cartan和Moore所示,第一正常丛具有最低可能的秩$n-1$。这些子流形是一类已被广泛研究,由于他们的许多性质。例如,它们是完整的,并允许Bäcklund和Ribaucour变换。

英文摘要:

We prove a converse to well-known results by E. Cartan and J. D. Moore. Let $f\colon M^n_c\to\Q^{n+p}_{\tilde c}$ be an isometric immersion of a Riemannian manifold with constant sectional curvature $c$ into a space form of curvature $\tilde c$, and free of weak-umbilic points if $c>\tilde{c}$. We show that the substantial codimension of $f$ is $p=n-1$ if, as shown by Cartan and Moore, the first normal bundle possesses the lowest possible rank $n-1$. These submanifolds are of a class that has been extensively studied due to their many properties. For instance, they are holonomic and admit Bäcklund and Ribaucour transformations.

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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