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Improved Sobolev Inequality Under Constraints
International Mathematics Research Notices ( IF 0.9 ) Pub Date : 2021-03-01 , DOI: 10.1093/imrn/rnab067
Fengbo Hang 1 , Xiaodong Wang 2
Affiliation  

We give a new proof of Aubin’s improvement of the Sobolev inequality on $ \mathbb{S}^{n}$ under the vanishing of 1st-order moments of the area element and generalize it to higher-order moments case. By careful study of an extremal problem on $\mathbb{S}^{n}$, we determine the constant explicitly in the 2nd-order moments case.

中文翻译:

约束下改进的 Sobolev 不等式

我们给出了 Aubin 在面积元一阶矩消失的情况下改进了 $ \mathbb{S}^{n}$ 上的 Sobolev 不等式的新证明,并将其推广到高阶矩的情况。通过仔细研究 $\mathbb{S}^{n}$ 上的一个极值问题,我们明确地确定了二阶矩情况下的常数。
更新日期:2021-03-01
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