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arXiv 1502.01439math.APmath.DG
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黎曼流形上Moser-Trudinger不等式的新几何性质:非紧情形

New geometric aspects of Moser-Trudinger inequalities on Riemannian manifolds: the non-compact case

Alexandru Kristály

摘要:

本文第一部分研究完备非紧黎曼流形上Moser-Trudinger不等式的一些几何性质。通过探讨重排参数,等周估计,并通过Gromov的覆盖引理粘合局部一致估计,我们提供了一个Coulhon,Saloff-Coste和Varopoulos类型的刻画关于Moser-Trudinger不等式的有效性完全非紧PDMATHAMM维黎曼流形$(n\geq 2)$与里奇曲率从下面有界。对于非负和非正弯曲的黎曼流形,也分别给出了一些尖锐的结果。在第二部分中,我们结合变分变分和Lions型对称紧性原理,证明了$n-$维齐次Hadamard流形上一类包含$n-$ Laplace-Beltrami算子和临界非线性项的椭圆型问题的非零等距不变解的存在性。我们的结果补充了几个方向的Y。Yang [J. Funct.肛门,2012年]。

英文摘要:

In the first part of the paper we investigate some geometric features of Moser-Trudinger inequalities on complete non-compact Riemannian manifolds. By exploring rearrangement arguments, isoperimetric estimates, and gluing local uniform estimates via Gromov's covering lemma, we provide a Coulhon, Saloff-Coste and Varopoulos type characterization concerning the validity of Moser-Trudinger inequalities on complete non-compact $n-$dimensional Riemannian manifolds $(n\geq 2)$ with Ricci curvature bounded from below. Some sharp consequences are also presented both for non-negatively and non-positively curved Riemannian manifolds, respectively. In the second part, by combining variational arguments and a Lions type symmetrization-compactness principle, we guarantee the existence of a non-zero isometry-invariant solution for an elliptic problem involving the $n-$Laplace-Beltrami operator and a critical nonlinearity on $n-$dimensional homogeneous Hadamard manifolds. Our results complement in several directions those of Y. Yang [J. Funct. Anal., 2012].

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