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arXiv 2302.11545math.DG
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从 $M^2\times R$ 出发的双调和黎曼淹没

Biharmonic Riemannian submersions from $M^2\times R$

Ze-Ping Wang, Ye-Lin Ou

AI总结:

本文研究从乘积流形 $M^2\times R$ 到曲面的双调和黎曼淹没,给出平坦与非平坦目标曲面情形下的局部刻画,并证明从 $H^2\times R$ 到 $R^2$ 存在唯一的真双调和黎曼淹没。

摘要:

本文研究从乘积流形到曲面的双调和黎曼淹没 $\pi:M^2\times\r\to (N^2,h)$,并得到这类双调和映射的一些局部刻画。我们的结果表明:当目标曲面为平坦时,一个真双调和黎曼淹没 $\pi:M^2\times\r\to (N^2,h)$ 局部上是某个特殊扭曲乘积的投影;当目标曲面非平坦时,$\pi$ 局部上是两个 warped product 空间之间的特殊映射,且其 warping 函数满足一个常微分方程。作为附带结果,我们还证明存在唯一一个由 warped product 投影给出的真双调和黎曼淹没 $H^2\times \r\to \r^2$。

英文摘要:

In this paper, we study biharmonic Riemannian submersions $π:M^2\times\r\to (N^2,h)$ from a product manifold onto a surface and obtain some local characterizations of such biharmonic maps. Our results show that when the target surface is flat, a proper biharmonic Riemannian submersion $π:M^2\times\r\to (N^2,h)$ is locally a projection of a special twisted product, and when the target surface is non-flat, $π$ is locally a special map between two warped product spaces with a warping function that solves a single ODE. As a by-product, we also prove that there is a unique proper biharmonic Riemannian submersion $H^2\times \r\to \r^2$ given by the projection of a warped product.

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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