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arXiv 2101.07992math.DG
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完备黎曼流形上Xin-Laplacian的特征值

Eigenvalues of Xin-Laplacian on Complete Riemannian manifolds

Lingzhong Zeng, Zhouyuan Zeng

摘要:

本文首先考虑完备黎曼流形的有界区域上与Xin-Laplacian算子相关的Dirichlet本征值问题。通过建立一般公式,结合Chen和Cheng型的一些结果,证明了一些特征值不等式。作为应用,我们考虑了某些含有特殊函数的黎曼流形、平移孤子、欧几里得空间上的极小子流形、单位球面上的子流形、射影空间等的特征值,特别地,对于平移孤子,某些特征值不等式是普适的.此外,我们还研究了Xin-Laplacian算子的闭本征值问题,推广了Reilly关于Laplace-Beltrami算子第一本征值的结果.作为一些显著的应用,我们得到了Laplace-Beltrami算子在极小等参超曲面和单位球面上的焦点子流形上的第二非零特征值(不计特征值重数)的上界的一个非常精确的估计,从而引出了一个猜想,这也是本文最吸引人的部分.

英文摘要:

In this paper, we firstly consider Dirichlet eigenvalue problem which is related to Xin-Laplacian on the bounded domain of complete Riemannian manifolds. By establishing the general formulas, combining with some results of Chen and Cheng type, we prove some eigenvalue inequalities. As some applications, we consider the eigenvalues on some Riemannian manifolds admitting with special functions, the translating solitons, minimal submanifolds on the Euclidean spaces, submanifolds on the unit spheres, projective spaces and so on. In particular, for the case of translating solitons, some eigenvalue inequalities are universal. Moreover, we investigate the closed eigenvalue problem for the Xin-Laplacian and generalize the Reilly's result on the first eigenvalue of the Laplace-Beltrami operator. As some remarkable applications, we obtain a very sharp estimate for the upper bound of the second nonzero eigenvalue(without counting multiplicities of eigenvalues) of the Laplace-Beltrami operator on the minimal isoparametric hypersurfaces and focal submanifolds in the unit sphere, which leads to a conjecture and is the most fascinating part of this paper.

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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